Residual electric quantity discharger of ternary lithium battery single cell

Abstract

The invention provides a residual electric quantity discharger of a ternary lithium battery single cell, and belongs to the technical field of residual electric quantity discharging treatment of the ternary lithium battery single cell. Comprising a reaction tank, a feeding assembly is placed in the reaction tank, the feeding assembly is used for loading single battery cells, and the feeding assembly is connected with the reaction tank; and the rotating assembly is used for assisting in arranging the single battery cells, and the rotating assembly is connected with the feeding assembly. Through the arrangement of the feeding assembly and the rotating assembly, the feeding assembly not only can be used for conveniently arranging battery cells, but also can be adjusted according to a required loading space in a brine discharging process; the rotating assembly not only can improve the efficiency of arranging the battery cells, but also can ensure that the positive electrode and the negative electrode of each battery cell can be in full contact with saline water in the soaking process, and the discharged battery cells can be conveniently collected after soaking is completed, so that the efficiency is improved, and the potential safety hazard is reduced.

Description

Technical Field

[0001] This invention relates to the field of residual charge discharge treatment technology for ternary lithium battery cells, and particularly to a residual charge discharger for ternary lithium battery cells. Background Technology

[0002] A ternary lithium battery cell is the smallest independent energy storage unit consisting of nickel-cobalt-manganese or nickel-cobalt-aluminum as the positive electrode material, graphite as the negative electrode material, and an electrolyte, separator, and casing. It features high energy density and excellent low-temperature performance, and can be charged and discharged independently. It is a core component of battery packs in consumer electronics, new energy vehicles, and other fields, and its charging and discharging must be controlled within a safe range. The core of residual charge discharge treatment is to ensure safety and meet subsequent needs: firstly, to prevent residual charge from causing accidental short circuits between the positive and negative electrodes during subsequent disassembly and welding, which could lead to thermal runaway and fire; secondly, to comply with environmental regulations, discharging the used cells before recycling prevents equipment damage or contamination during breakage and acid dissolution processes; and thirdly, during maintenance and testing, discharging to a uniform voltage allows for accurate capacity testing, ensuring cell consistency when assembling battery packs, avoiding localized overcharging and over-discharging due to voltage differences, and reducing the risk of cell bulging and leakage during long-term storage.

[0003] When ternary lithium battery cells are waste products with no value for tiered utilization, and it is necessary to release the residual charge in a low-cost and safe manner for subsequent recycling (such as dismantling and metal extraction), brine immersion discharge is commonly used. The advantages are: the conductivity of brine is controllable, the discharge process is smooth, and overheating of the cells can be avoided; the equipment is simple (only containers and brine are needed), and the cost is low; it can be processed in batches, is suitable for small workshop scenarios, and the discharge rate can be controlled by adjusting the brine concentration, balancing safety and efficiency.

[0004] In some existing small workshops, large containers filled with brine are prepared in advance. The collected battery cells are gathered together and poured directly into the containers. This method is simple and efficient, but it is difficult to ensure that the positive and negative electrodes of each battery cell can fully contact the brine. If the positive and negative electrodes do not fully contact the reaction liquid, it will lead to poor contact in the discharge circuit, reduced current, and significantly prolonged discharge time. The residual charge is difficult to discharge completely. It may also cause the tabs to overheat due to the current concentrating at local contact points, resulting in battery cell bulging and leakage. Furthermore, when the battery cells that have not been fully discharged are subsequently recycled and dismantled, they are prone to short circuits and fires due to residual charge. At the same time, partial discharge may not always cause lithium plating on the negative electrode, creating a safety hazard. Therefore, based on the above problems, this invention provides a residual charge discharger for ternary lithium battery cells to meet the requirements. Summary of the Invention

[0005] The technical problem this invention aims to solve is to provide a residual charge discharger for ternary lithium battery cells. By setting up a feeding component and a rotating component, the feeding component not only facilitates the arrangement of battery cells but also allows for adjustment based on the required loading space during the salt water discharge process. The rotating component not only improves the efficiency of cell arrangement but also ensures that the positive and negative electrodes of each cell are in full contact with the salt water during immersion. After immersion, it facilitates the collection of the discharged battery cells, thus improving efficiency and reducing safety hazards. This design solves the problem in some small workshops where battery cells are directly poured into containers, making it difficult to ensure that the positive and negative electrodes of each cell are in full contact with the salt water, thereby causing safety hazards.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A residual charge discharger for a ternary lithium battery cell includes a reaction cell, inside which is placed a feeding assembly for loading the individual battery cells, the feeding assembly being connected to the reaction cell; and a rotating assembly for assisting in arranging the individual battery cells, the rotating assembly being connected to the feeding assembly.

[0007] Optionally, the feeding assembly includes a uniformly distributed feeding platform, with uniformly distributed grooves at the edges of the feeding platform. A rotating rod is rotatably connected to the inner wall of the groove, and an adjusting rope passes through the free end of the rotating rod. An extension platform is fitted onto the outer contour of the feeding platform, and a through groove is formed on the extension platform corresponding to the position of the rotating rod. A positioning plate is placed on the top of the topmost feeding platform, and a positioning groove is formed on the edge of the positioning plate corresponding to the position of the groove. A rotating assembly is inserted into the center of the feeding platform.

[0008] Optionally, the length of the rotating rod is greater than the inner wall length of the through groove, and the outer contour of the rotating rod is adapted to the inner wall dimension of the through groove.

[0009] Optionally, the rotating assembly includes a rotating shaft inserted into the center of the loading platform. A lifting ring is fixedly connected to the top of the rotating shaft. A limiting shaft is fixedly connected to the outer contour of the rotating shaft. Evenly distributed support plates are fixedly connected to the limiting shaft. Evenly distributed leveling rods are fixedly connected to one side of the limiting shaft. The leveling rods are located at the bottom of the support plates. A turntable is threadedly connected to the top of the limiting shaft. A corresponding groove is opened near the edge of the turntable. The corresponding groove corresponds one-to-one with the groove.

[0010] Optionally, a groove adapted to the outer contour dimensions of the support plate is provided at the bottom center of the feeding platform, and the inner wall dimension of the groove is larger than the outer contour diameter of the rotating rod.

[0011] Optionally, one end of the adjusting rope passes through the free end of the rotating rod in sequence, and the other end of the adjusting rope is wound around the outer wall of the support plate through the positioning groove and then passes through the inner wall of the corresponding groove. Both ends of the adjusting rope are fixedly connected to the two sides of the adjusting rope corresponding to the rotating rod.

[0012] Optionally, the outer wall of the turntable is provided with uniformly distributed weakening grooves, and the inner wall dimension of the corresponding groove is larger than the outer contour dimension of the adjusting rope.

[0013] Optionally, a groove is provided at the center of the leveling rod, and a scraper is inserted into the groove. The inner wall size of the groove is adapted to the outer contour size of the scraper.

[0014] Optionally, a connecting rod is fixedly connected to the scraper on the side near the limiting shaft, and a circular groove is provided on the limiting shaft corresponding to the position of the connecting rod. The inner wall dimension of the circular groove is larger than the outer contour dimension of the connecting rod.

[0015] Optionally, a lifting part is fixedly connected to the top of the connecting rod, and a locking groove is provided near the top of the lifting part. A fixing rod is fixedly connected to the top of the limiting shaft, and a plug rod is inserted into the fixing rod near the top. A ring is fixedly connected to the outer wall of the plug rod.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, by setting up a feeding component and a rotating component, the feeding component can not only facilitate the arrangement of battery cells, but also adjust according to the required loading space during the brine discharge process, thus making it easier to load, unload, and soak the battery cells; the rotating component can not only improve the efficiency of arranging battery cells, but also ensure that the positive and negative electrodes of each battery cell can fully contact the brine during the soaking process, and facilitate the collection of the discharged battery cells after soaking, which improves efficiency and reduces safety hazards.

[0017] By combining the loading platform and the extension platform, different loading spaces can be formed. When the extension platform is tilted upward, it forms a concave platform with the loading platform, which facilitates the pouring of the battery cells to be discharged. When the extension platform is in a horizontal state, it forms a larger circular platform with the loading platform, which facilitates the arrangement of dispersed battery cells. When the extension platform is tilted downward, it forms a convex platform with the loading platform, which facilitates the sliding of the discharged battery cells, thus making them easy to collect.

[0018] By setting up a rotating rod and adjusting ropes, the relative position of the rotating rod can be adjusted by changing the length of the adjusting ropes. Moreover, both the rotating rod and the adjusting ropes are distributed in a circular array. Twisting the turntable can drive the adjusting ropes and rotating rods at different positions to adjust synchronously, which facilitates the uniform adjustment of the state of different layers. Furthermore, through the fixed blocks fixedly connected to the adjusting ropes, when twisting the turntable, only the length of the adjusting rope between the turntable and the topmost rotating rod can be changed, so that the rotating rods of different layers remain parallel.

[0019] By setting up a leveling rod and a scraper, there are two states between the leveling rod and the scraper: when the scraper is stored inside the chute, it is convenient to uniformly lay the messy cells horizontally during loading, which facilitates the dispersion of the cells; when the bottom of the scraper slides down between the loading platform and the leveling rod, it is convenient to collect the discharged cells during unloading. Attached Figure Description

[0020] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0021] Figure 1 A three-dimensional structural diagram of a residual charge discharger for a single ternary lithium battery cell; Figure 2 A first-person perspective 3D structural diagram showing the coordination between the feeding assembly and the rotating assembly; Figure 3 A first-person perspective 3D structural diagram showing the combination of the rotating components and some of the feeding components; Figure 4 for Figure 3 Enlarged 3D structural diagram at point A in the middle; Figure 5 This is a partial cross-sectional 3D structural diagram of some of the feeding components; Figure 6 A magnified three-dimensional structural diagram from a second-view perspective, showing the coordination between the feeding assembly and the rotating assembly. Figure 7 A schematic diagram of a third-view 3D structure for the feeding assembly and rotating assembly; Figure 8 A partial cross-sectional 3D structural diagram of the feeding assembly and rotating assembly from a third-view perspective; Figure 9 A second-view 3D structural diagram showing the combination of the rotating component and part of the feeding component; Figure 10 for Figure 9 Enlarged 3D structural diagram at point B; Figure 11 A schematic diagram of the three-dimensional structure for the cooperation of the limiting shaft and the plate; Figure 12 for Figure 11 Enlarged 3D structural diagram at point C.

[0022] Figure label: 1. Reaction tank; 2. Rotating shaft; 3. Lifting ring; 4. Limiting shaft; 5. Support plate; 6. Feeding platform; 7. Groove; 8. Rotating rod; 9. Adjusting rope; 10. Fixing block; 11. Extension platform; 12. Through groove; 13. Positioning plate; 14. Positioning groove; 15. Leveling rod; 16. Sliding groove; 17. Scraping plate; 18. Connecting rod; 19. Circular groove; 20. Lifting part; 21. Fixing rod; 22. Insertion rod; 23. Locking groove; 24. Turntable; 25. Weakening groove; 26. Corresponding groove.

[0023] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0024] The residual charge discharger for a ternary lithium battery cell provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0025] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0026] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0027] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0028] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0029] like Figures 1 to 12 As shown, an embodiment of the present invention provides a residual charge discharger for a ternary lithium battery cell, including a reaction tank 1, a feeding assembly placed inside the reaction tank 1 for loading the individual battery cells, and the feeding assembly being connected to the reaction tank 1; and a rotating assembly for assisting in arranging the individual battery cells, the rotating assembly being connected to the feeding assembly. The residual charge discharger for a ternary lithium battery cell provided in this application is suitable for the discharge pretreatment stage in the batch processing of waste lithium batteries in some small workshops. The working principle of salt water discharge is disclosed as prior art and will not be described in detail. In actual products, salt water (usually sodium chloride solution) has a certain conductivity. When the lithium battery is placed in salt water, the salt water acts as an electrolyte, forming an ionic conductive path between the positive and negative electrodes of the battery, realizing the transfer of charge inside the battery, thereby consuming the battery power.

[0030] By setting up a feeding component and a rotating component, the feeding component can not only facilitate the arrangement of battery cells, but also be adjusted according to the required loading space during the brine discharge process, thus making it easier to load, unload, and soak the battery cells; the rotating component can not only improve the efficiency of arranging battery cells, but also ensure that the positive and negative electrodes of each battery cell can fully contact the brine during the soaking process, and facilitate the collection of the discharged battery cells after soaking, which improves efficiency and reduces safety hazards.

[0031] As one implementation method in this embodiment, such as Figures 1 to 12As shown, the feeding assembly includes a uniformly distributed feeding platform 6. The edges of the feeding platform 6 are provided with uniformly distributed grooves 7. A rotating rod 8 is rotatably connected to the inner wall of the groove 7. The inner wall size of the groove 7 is larger than the outer diameter of the rotating rod 8. An adjustment rope 9 passes through the free end of the rotating rod 8. An extension platform 11 is fitted onto the outer contour of the feeding platform 6. A through groove 12 is provided through the extension platform 11 corresponding to the position of the rotating rod 8. The length of the rotating rod 8 is larger than the inner wall length of the through groove 12. The outer contour size of the rotating rod 8 is adapted to the inner wall size of the through groove 12. A positioning plate 13 is placed on the top of the feeding platform 6. A positioning groove 14 is provided at the edge of the positioning plate 13 corresponding to the position of the groove 7. A rotating assembly is inserted into the center of the feeding platform 6.

[0032] Specifically, multiple evenly distributed feeding platforms 6 are arranged sequentially from top to bottom (e.g., Figure 5 As shown), both the feeding platform 6 and the groove 7 are made of highly corrosion-resistant materials. The feeding platform 6 and the groove 7 are made of porous polytetrafluoroethylene (PTFE) or polypropylene (PP) filter cloth. These materials can maintain relatively stable performance in brine containing trace amounts of electrolyte, extending the service life of the filter cloth. The grooves 7 are arranged in a circumferential array on the feeding platform 6. A rotating rod 8 is rotatably connected to the inner wall of the groove 7. The rotating rod 8 is inserted into the through slot 12 on the extension platform 11. The rotation amplitude of the rotating rod 8 can adjust whether the plane of the extension platform 11 is tilted upwards, horizontally, or downwards. When the rotating rod 8 rotates upwards around the groove 7, the outer contour of the cross-section formed by the extension platform 11 and the feeding platform 6 is a trapezoidal shape that is wider at the top and narrower at the bottom (e.g., ...). Figure 6 As shown), this facilitates the carrying of battery cells; when the rotating rod 8 is in a horizontal state, the extension platform 11 and the loading platform 6 form an integral circular platform, which facilitates the arrangement and dispersion of battery cells on the circular platform; when the rotating rod 8 rotates downward around the groove 7, the outer contour of the cross-section formed by the extension platform 11 and the loading platform 6 is a trapezoidal shape that is narrower at the top and wider at the bottom (as shown). Figure 7 As shown), to facilitate the sliding of the battery cell, a positioning plate 13 is set directly above the top loading platform 6. The positioning groove 14 on the positioning plate 13 corresponds to the position of the groove 7. The positioning groove 14 can be used to limit the adjustment rope 9 and ensure that the adjustment rope 9 is wound in an orderly manner.

[0033] By setting up the feeding platform 6 and the extension platform 11 in cooperation, the extension platform 11 and the feeding platform 6 can be combined to form different loading spaces. When the extension platform 11 is tilted upward, it forms a concave platform with the feeding platform 6, which facilitates the pouring of the battery cells to be discharged. When the extension platform 11 is in a horizontal state, it combines with the feeding platform 6 to form a larger circular platform, which facilitates the arrangement of dispersed battery cells. When the extension platform 11 is tilted downward, it forms a convex platform with the feeding platform 6, which facilitates the sliding of the discharged battery cells, thus facilitating collection.

[0034] As one implementation method in this embodiment, such as Figures 1 to 12 As shown, the rotating assembly includes a rotating shaft 2 inserted into the center of the loading platform 6. A lifting ring 3 is fixedly connected to the top of the rotating shaft 2. A limiting shaft 4 is fixedly connected to the outer contour of the rotating shaft 2. Evenly distributed support plates 5 are fixedly connected to the limiting shaft 4. A groove (e.g., a groove matching the outer contour size of the support plate 5) is provided at the center of the bottom of the loading platform 6. Figure 8 As shown), a leveling rod 15 is fixedly connected to one side of the limiting shaft 4. The leveling rod 15 is located at the bottom of the support plate 5. A groove 16 is provided at the center of the leveling rod 15. A scraping plate 17 is inserted into the groove 16. The inner wall size of the groove 16 is adapted to the outer contour size of the scraping plate 17. A connecting rod 18 is fixedly connected to the side of the scraping plate 17 near the limiting shaft 4. A circular groove 19 is provided on the limiting shaft 4 corresponding to the position of the connecting rod 18 (e.g., ...). Figures 11 to 12 As shown), the inner wall dimension of the circular groove 19 is larger than the outer contour dimension of the connecting rod 18. A lifting part 20 is fixedly connected to the top of the connecting rod 18, and a locking groove 23 is provided near the top of the lifting part 20 (as shown). Figure 4 As shown), a fixing rod 21 is fixedly connected to the top of the limiting shaft 4. A connecting rod 22 is inserted into the fixing rod 21 near its top. A ring is fixedly connected to the outer wall of the connecting rod 22. A turntable 24 is threadedly connected to the top of the limiting shaft 4. Evenly distributed weakening grooves 25 are formed on the outer wall of the turntable 24. Corresponding grooves 26 are formed near the edge of the turntable 24 (e.g., ...). Figure 10 As shown), the positions of the corresponding groove 26 and the groove 7 correspond one-to-one. The inner wall size of the corresponding groove 26 is larger than the outer contour size of the adjusting rope 9. One end of the adjusting rope 9 passes through the free end of the rotating rod 8 in sequence. The other end of the adjusting rope 9 passes through the positioning groove 14, wraps around the outer wall of the support plate 5, and then passes through the inner wall of the corresponding groove 26. Both ends of the adjusting rope 9 and the two sides of the corresponding rotating rod 8 on the adjusting rope 9 are fixedly connected to the fixing blocks 10.

[0035] Furthermore, a drive motor is externally connected to the rotating shaft 2 to drive its rotation. The specific connection structure between the rotating shaft 2 and the drive motor, as well as the working principle of the drive motor, are disclosed as prior art and will not be elaborated further. When the rotating shaft 2 rotates, it drives the limiting shaft 4, the support plate 5, and the leveling rod 15 to rotate synchronously. The groove at the center of the bottom of the loading platform 6 is adapted to the outer contour of the support plate 5. The rotation of the support plate 5 does not affect the position of the loading platform 6, and at the same time, the support plate 5 can also support the loading platform 6. A circular base is fixedly connected to the bottom of the rotating shaft 2. The outer diameter of the circular base is larger than that of the rotating shaft 2, which facilitates the circular base to provide a stable support point and is beneficial to the stability of the overall structure. A lifting ring 3 (such as...) is fixedly connected to the top of the rotating shaft 2. Figure 2(As shown), it is convenient to cooperate with cranes or hoists. The hook on the crane or hoist cooperates with the lifting ring 3, which can facilitate the transfer of the device and adapt to different processes. The adjusting rope 9 passes through the free end of the rotating rod 8, passes through the positioning groove 14 and then passes through the corresponding groove 26. The excess adjusting rope 9 is orderly wound on the support plate 5. The turntable 24 is threadedly connected to the support plate 5 near the top. Turning the turntable 24 clockwise can reduce the number of turns of the adjusting rope 9 on the support plate 5 (e.g., Figure 7 As shown), this adapts to the downward rotation of the rotating rod 8. Twisting the turntable 24 counterclockwise increases the number of turns of the adjusting rope 9 around the support plate 5 (e.g., Figure 6 As shown in the figure, it adapts to the upward rotation of the rotating rod 8, and the weakening groove 25 provided on the turntable 24 can increase the friction between the turntable 24 and the turntable 24, making it easier to rotate the turntable 24.

[0036] By setting up a rotating rod 8 and an adjusting rope 9 in cooperation, the relative position of the rotating rod 8 can be adjusted by changing the length of the adjusting rope 9. Moreover, both the rotating rod 8 and the adjusting rope 9 are distributed in a circular array. Twisting the turntable 24 can drive the adjusting rope 9 and the rotating rod 8 at different positions to adjust synchronously, which is convenient for uniformly adjusting the state of different layers. Furthermore, through the fixing block 10 fixedly connected to the adjusting rope 9, when the turntable 24 is twisted, only the length of the adjusting rope 9 between the turntable 24 and the topmost rotating rod 8 can be changed, so that the rotating rods 8 of different layers remain parallel.

[0037] Furthermore, the scraper 17 is inserted inside the leveling rod 15 and slides inside the groove 16. Since the top of the connecting rod 18 has two locking grooves 23 of different heights, when the connecting rod 22 is inserted into the locking grooves 23 of different heights, the relative position of the scraper 17 and the leveling rod 15 can be changed. First, pull the connecting rod 22 away from the connecting rod 18 to separate the connecting rod 22 from the locking grooves 23, so that the position of the connecting rod 18 can be easily adjusted. The other hand can lift upward or press downward to make the insertion... The rod 22 corresponds to the locking groove 23 to be inserted. Then, the insertion rod 22 is pulled towards the connecting rod 18, so that the insertion rod 22 engages with the locking groove 23, which can limit the position of the scraping plate 17. Moreover, the ring fixedly connected to the insertion rod 22 not only indicates the positional relationship between the insertion rod 22 and the locking groove 23, but also ensures the positional relationship between the insertion rod 22 and the fixing rod 21, preventing the insertion rod 22 from disengaging. When the insertion rod 22 is inserted into the locking groove 23 located at the top, the scraping plate 17 is housed inside the slide groove 16 (e.g., Figures 3 to 4 and Figure 8As shown), the distance between the bottom of the leveling rod 15 and the top of the loading platform 6 is less than the height of the battery cell and greater than the width of the battery cell. In this state, rotating the leveling rod 15 can push the standing battery cells over, ensuring that the battery cells are all lying horizontally on the top of the loading platform 6. When the plug-in rod 22 is inserted into the locking groove 23 located at the bottom, the bottom of the scraper plate 17 slides down between the loading platform 6 and the leveling rod 15 (as shown). Figures 9 to 12 As shown), the distance between the bottom of the scraping plate 17 and the top of the loading platform 6 is smaller than the width of the battery cell. In this state, rotating the leveling rod 15 can scrape off the battery cell on the loading platform 6, so that the battery cell can slide off the downwardly inclined extension platform 11, thereby facilitating the collection of the battery cell after discharge treatment.

[0038] By setting up the leveling rod 15 and the scraper 17 in cooperation, there are two states between the leveling rod 15 and the scraper 17: when the scraper 17 is stored inside the chute 16, it is convenient to uniformly lay the messy cells horizontally during feeding, which facilitates the dispersion of the cells; when the bottom of the scraper 17 slides down to between the feeding platform 6 and the leveling rod 15, it is convenient to collect the discharged cells during unloading.

[0039] The working principle of the technical solution provided by this invention is as follows: In use, outside the reaction tank 1, first rotate the turntable 24 counterclockwise to increase the number of turns of the adjusting rope 9 around the support plate 5, causing the rotating rod 8 to rotate upward. When the rotating rod 8 rotates upward around the groove 7, the outer contour of the cross-section formed by the expansion platform 11 and the loading platform 6 is a trapezoidal shape that is wider at the top and narrower at the bottom, which facilitates the carrying of the battery cells. The battery cells are poured in from between different layers of the expansion platform 11 and slide down to the top of the loading platform 6. After the battery cells are poured on each layer of the loading platform 6, rotate the turntable 24 clockwise to adjust the rotating rod 8 to a horizontal state. The expansion platform 11 and the loading platform 6 form an integral circular platform, which facilitates the arrangement and dispersion of the battery cells on the circular platform. Start the drive motor to drive the rotation of the rotating shaft 2. When the rotating shaft 2 rotates, it drives the limit shaft. 4. The support plate 5 and the leveling rod 15 rotate synchronously. The groove at the center of the bottom of the loading platform 6 matches the outer contour of the support plate 5. The rotation of the support plate 5 does not affect the position of the loading platform 6. At the same time, the support plate 5 can also support the loading platform 6. At this time, the plug rod 22 is plugged into the locking groove 23 at the top. The scraping plate 17 is stored inside the slide groove 16. The distance between the bottom of the leveling rod 15 and the top of the loading platform 6 is less than the height of the battery cell and greater than the width of the battery cell. In this state, rotating the leveling rod 15 can push the standing battery cells down, ensuring that the battery cells are all lying horizontally on the top of the loading platform 6. After the battery cells are all arranged, the crane or hoist is started. The hook and lifting ring 3 on the crane or hoist... In conjunction with the above, the entire assembly is placed inside reaction tank 1, allowing the brine inside to submerge the battery cell. The hooks on the crane or hoist are removed. At this point, the rotating leveling rod 15 eliminates air bubbles generated when the battery cell comes into contact with the brine. These air bubbles adhere to the positive and negative electrode surfaces or the electrode tabs, cutting off direct contact between the brine and the electrodes. Eliminating air bubbles ensures a stable conductive path and prevents a decrease in discharge efficiency. After the discharge process is complete, the crane or hoist is restarted. The hooks on the crane or hoist engage with the lifting ring 3 to move the entire assembly out of reaction tank 1. When it is time to remove the battery cell, the turntable 24 is rotated clockwise to reduce the number of turns of the adjusting rope 9 around the support plate 5, causing the rotating rod 8 to rotate downwards. When the rotating rod 8 rotates downwards around the groove 7... The cross-sectional outline formed by the extension platform 11 and the loading platform 6 is a trapezoidal shape that is narrow at the top and wide at the bottom, which facilitates the sliding of the battery cells and allows the insertion rod 22 to be inserted into the locking groove 23 located at the bottom. The bottom of the scraping plate 17 slides down to between the loading platform 6 and the leveling rod 15. The distance between the bottom of the scraping plate 17 and the top of the loading platform 6 is smaller than the width of the battery cell. In this state, rotating the leveling rod 15 can scrape off the battery cells on the loading platform 6, so that the battery cells can slide down from the downwardly inclined extension platform 11, thereby facilitating the collection of the battery cells after discharge treatment. This device can not only facilitate the arrangement of battery cells, but also adjust the loading space according to the required loading space during the salt discharge process, thereby making it easier to load, unload and soak the battery cells.It can also improve the efficiency of cell arrangement, and during the soaking process, it ensures that the positive and negative electrodes of each cell are in full contact with the brine. After soaking, it facilitates the collection of the cells after discharge treatment, thus improving efficiency and reducing safety hazards.

[0040] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0041] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A residual charge discharger for a ternary lithium battery cell, comprising a reaction cell, characterized in that, The reaction tank contains a feeding assembly for loading individual battery cells, and the feeding assembly is connected to the reaction tank. A rotating assembly, used to assist in arranging individual battery cells, is connected to the feeding assembly.

2. The residual charge discharger for a ternary lithium battery cell according to claim 1, characterized in that, The feeding assembly includes a uniformly distributed feeding platform. The edges of the feeding platform are provided with uniformly distributed grooves. A rotating rod is rotatably connected to the inner wall of the groove. An adjusting rope passes through the free end of the rotating rod. An extension platform is fitted onto the outer contour of the feeding platform. The extension platform has a through groove corresponding to the position of the rotating rod. A positioning plate is placed on the top of the top feeding platform. The edge of the positioning plate has a positioning groove corresponding to the position of the groove. A rotating assembly is inserted into the center of the feeding platform.

3. The residual charge discharger for a ternary lithium battery cell according to claim 2, characterized in that, The length of the rotating rod is greater than the inner wall length of the through groove, and the outer contour of the rotating rod is adapted to the inner wall dimension of the through groove.

4. The residual charge discharger for a ternary lithium battery cell according to claim 2, characterized in that, The rotating assembly includes a rotating shaft inserted into the center of the loading platform. A lifting ring is fixedly connected to the top of the rotating shaft. A limiting shaft is fixedly connected to the outer contour of the rotating shaft. Evenly distributed support plates are fixedly connected to the limiting shaft. Evenly distributed leveling rods are fixedly connected to one side of the limiting shaft. The leveling rods are located at the bottom of the support plates. A turntable is threaded to the top of the limiting shaft. A corresponding groove is opened near the edge of the turntable. The corresponding groove corresponds one-to-one with the groove.

5. The residual charge discharger for a ternary lithium battery cell according to claim 4, characterized in that, The bottom center of the loading platform has a groove that matches the outer contour size of the support plate, and the inner wall size of the groove is larger than the outer contour diameter of the rotating rod.

6. The residual charge discharger for a ternary lithium battery cell according to claim 4, characterized in that, One end of the adjusting rope passes through the free end of the rotating rod in sequence, and the other end of the adjusting rope passes through the inner wall of the support plate after being wound around the outer wall of the positioning groove. Both ends of the adjusting rope are fixedly connected to the two sides of the rotating rod on the adjusting rope.

7. The residual charge discharger for a ternary lithium battery cell according to claim 4, characterized in that, The turntable has evenly distributed weakening grooves on its outer wall, and the inner wall dimension of the corresponding groove is larger than the outer contour dimension of the adjusting rope.

8. The residual charge discharger for a ternary lithium battery cell according to claim 4, characterized in that, A groove is provided at the center of the leveling rod, and a scraper is inserted into the groove. The inner wall size of the groove is adapted to the outer contour size of the scraper.

9. The residual charge discharger for a ternary lithium battery cell according to claim 8, characterized in that, A connecting rod is fixedly connected to the scraping plate on the side near the limiting shaft. A circular groove is opened on the limiting shaft corresponding to the position of the connecting rod. The inner wall dimension of the circular groove is larger than the outer contour dimension of the connecting rod.

10. The residual charge discharger for a ternary lithium battery cell according to claim 9, characterized in that, The top of the connecting rod is fixedly connected to a lifting part, and a locking groove is provided near the top of the lifting part. The top of the limiting shaft is fixedly connected to a fixing rod, and a plug rod is inserted into the fixing rod near the top. A ring is fixedly connected to the outer wall of the plug rod.

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