Recycling and discharging control method for waste lithium battery

Abstract

The invention discloses a waste lithium battery recovery discharge control method, which comprises the following steps: S1, measuring the size of a battery through a measuring table, comparing the measured battery size with data in a database to obtain a battery discharge scheme adaptive to the currently detected battery, and obtaining an optimal discharge current scheme corresponding to the battery; s2, enabling a feeding and discharging manipulator to clamp the measured battery for feeding; s3, enabling the pole of the battery to abut against the copper sheet; s4, the discharging cabinet outputs the optimal current through the wiring terminal to conduct the copper sheet to discharge the battery; and S5, the feeding and discharging mechanical arm transfers the battery to the rear half section of the milling section discharging conveying belt. The discharging device can be matched with the most suitable current to discharge the battery.

Description

Technical Field

[0001] This invention relates to a battery recycling method, and more particularly to a method for controlling the discharge of recycled waste lithium batteries. Background Technology

[0002] Lithium batteries, as the main carrier of new energy, are composed of copper and aluminum foil, nickel, cobalt, lithium manganese salt, graphite, electrolyte, separator paper, etc. During the recycling process of lithium batteries, if the charged battery is squeezed or punctured during recycling, it may trigger a reaction that could cause a fire or explosion. Therefore, the battery needs to be discharged before recycling. Most existing methods use resistive loads or special discharge equipment to slowly release residual electrical energy.

[0003] Traditional devices often use low current to discharge batteries for safety reasons. While this ensures safe discharge, the discharge efficiency is very low because two hours have passed after the battery is fully discharged. Therefore, some existing devices use high current for discharge, which is very fast. However, discharging at high power causes the battery temperature to rise rapidly, easily leading to overheating, fire, spontaneous combustion, or explosion, resulting in very poor safety. Therefore, how to discharge batteries safely and efficiently has always been a pain point for enterprises.

[0004] Therefore, this case aims to provide a method for controlling the discharge of waste lithium batteries. During the battery discharge stage, it can adapt the most suitable current to discharge the battery, monitor the battery temperature in real time, and take different measures to deal with the battery as the temperature rises, so as to discharge waste batteries safely and efficiently. Summary of the Invention

[0005] This invention provides a method for controlling the discharge of recycled waste lithium batteries, which can effectively solve the above-mentioned problems.

[0006] This invention is implemented as follows: A method for controlling the discharge of recycled waste lithium batteries, comprising: S1: The battery size is measured by the measuring table, and the measured battery size is compared with the data in the database to obtain the battery discharge scheme that is compatible with the currently detected battery. The optimal discharge current scheme corresponding to the battery is obtained, and the discharge current scheme is transmitted to the receiver of the loading and unloading robot. S2: The loading and unloading robot grips the measured battery and moves it to the non-operating battery discharge rack to complete the loading. S3: After the battery is loaded, the discharge limiting structure pushes the battery toward the discharge module, so that the battery terminals press against the copper sheet. S4: The loading and unloading robot transmits the discharge current scheme determined by S1 to the discharge cabinet corresponding to the battery discharge rack where the battery is placed. The discharge cabinet outputs the optimal current through the terminal block to discharge the battery, so that the residual charge in the battery can be completely discharged. S5: The discharge cabinet disconnects the power supply after the time specified by the discharge current scheme, and then the battery is transferred to the second half of the milling section's discharge conveyor belt by the loading and unloading robot.

[0007] As a further improvement, when measuring the battery size, S1 obtains the actual size of the battery by extracting the boundary coordinates of the battery casing from the encoder and combining them with its own position data.

[0008] As a further improvement, it also includes: a discharge device comprising several battery discharge racks mounted on an automated storage cabinet, each battery discharge rack having two discharge modules. Copper plates are fixed to each discharge module, and the copper plates are connected to the discharge cabinet via terminals. Each discharge module has a heat dissipation structure, and a discharge limiting structure is provided opposite to the discharge module. The battery discharge rack has a dual-channel temperature detection structure. When a robotic arm loads batteries onto the battery discharge rack, the discharge limiting structure pushes the batteries onto the discharge modules, causing the battery terminals to contact the copper plates and energizing the terminals to discharge the batteries.

[0009] As a further improvement, it also includes: a current distribution structure comprising several discharge cabinets installed inside the automated storage cabinet, all of which are connected to the same terminal, and the number of discharge cabinets corresponds one-to-one with the number and position of the battery discharge racks, the encoder of the measuring platform is electrically connected to the loading and unloading robot, and the loading and unloading robot is electrically connected to the discharge cabinets, when the loading and unloading robot transfers the measured battery to the corresponding battery discharge rack, the discharge cabinet corresponding to the battery discharge rack outputs a current of the corresponding size according to the size of the battery.

[0010] As a further improvement, the heat dissipation structure includes several heat dissipation fins and an external fan. The heat dissipation fins are arranged on four sides inside the aluminum base, and the external fan is arranged on the axial direction of one of the aluminum bases. The heat generated when the battery discharges is dissipated through the heat dissipation fins to the inner wall of the aluminum base and blown away by the external fan.

[0011] As a further improvement, the dual-channel temperature detection structure includes a first temperature sensor disposed on one side of the discharge module, and a second temperature sensor disposed opposite the first temperature sensor.

[0012] As a further improvement, the dual-path temperature detection structure monitors the battery temperature during the discharge process. When the battery temperature exceeds the set threshold, the discharge device and current distribution structure are adjusted.

[0013] As a further improvement, the threshold includes a first threshold, a second threshold, and a third threshold. When the battery temperature reaches the first threshold, the power of the external fan reaches its maximum.

[0014] As a further improvement, the current of the discharge cabinet is reduced when the battery temperature reaches a second threshold.

[0015] As a further improvement, when the battery temperature reaches a third threshold, the discharge cabinet is shut down, and the loading and unloading robot transfers the battery to a water tank for fire extinguishing.

[0016] The beneficial effects of this invention are: Different sized batteries have different capacities and residual capacities after use. If the same discharge current is used, either the current will be too high and the heat will rise and cause a fire, or it will be difficult to completely discharge the current even after a long period of discharge. Therefore, this invention first establishes a database that includes most sized batteries on the market and the discharge currents that are suitable for different sized batteries, constructing different discharge schemes. Before the battery is discharged, the size of the battery is measured by a measuring platform, and then the optimal discharge scheme is determined by comparison. The most suitable discharge current is applied to the battery through the discharge cabinet, so that batteries of different sizes can achieve the best discharge effect.

[0017] Existing technologies directly use high current for discharge, resulting in very fast discharge speeds. However, under high power conditions, the battery temperature rises rapidly, easily leading to overheating, fire, spontaneous combustion, or explosion, posing a significant safety risk. Therefore, this invention addresses this by directly integrating a heat dissipation structure onto the discharge module and using a discharge limiting structure to push the battery into contact with the discharge module. This allows for timely heat dissipation into the discharge module and rapid discharge through it, enabling quick heat removal even at slightly higher currents and preventing battery overheating and fire.

[0018] To better monitor battery temperature, this invention employs a dual-path temperature detection structure, which simultaneously places a first temperature sensor and a second temperature sensor at the front and rear ends of the battery, respectively, to capture the battery temperature from the front and rear ends. This allows the robotic arm to promptly handle the situation when the battery temperature rises to a threshold, preventing any impact on the discharge process at other locations.

[0019] Although the most suitable current is used for discharge, the charge content of some batteries varies, so there is a possibility of abnormal temperature rise. Therefore, based on battery adaptation, this invention uses a dual-channel temperature detection structure to monitor multiple thresholds. Different safety protection actions can be performed in different threshold areas, thereby ensuring safety protection while ensuring continuous discharge operation, avoiding stopping when the temperature exceeds the limit, and at the same time, immediately performing safety operation when the temperature exceeds the limit. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a flowchart illustrating the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of the recycling discharge device of the present invention.

[0023] Figure 3 This is the present invention. Figure 2 A magnified view of region A in the middle.

[0024] Figure 4 This is the present invention. Figure 2 A top-view structural diagram.

[0025] Figure 5 This is a structural schematic diagram of the three-dimensional warehouse cabinet of the present invention.

[0026] Figure 6 This is the present invention. Figure 5 A side view structural diagram.

[0027] Figure 7 This is a schematic diagram of the discharge device of the present invention.

[0028] Figure 8 This is the present invention. Figure 7 A top-view structural diagram.

[0029] Figure 9 This is the present invention. Figure 7 A schematic diagram of the left-side view structure.

[0030] Figure 10 This is the present invention. Figure 7 A schematic diagram of the structure viewed from below.

[0031] In the picture: Battery discharge mounting rack 21, clearance slot 211, discharge module 22, module mounting base 221, module mounting plate 2211, U-shaped plate 2212, aluminum base 222, discharge limiting structure 23, discharge push rod motor 231, heightening plate 232, lever plate 233, guide column head 234, discharge guide rod 235, dual-channel temperature detection structure 24, first temperature sensor 241, second temperature sensor 242, heat dissipation fins 251, external fan 252, limit post 26, copper sheet 27, three-dimensional warehouse cabinet 30, adaptive distribution and adjustment structure 31, discharge robot mounting platform 311, loading and unloading robot 312, dual-station mounting plate 3121, transfer station 3122, bidirectional clamping motor group 3123, discharge cabinet 32. Detailed Implementation

[0032] All embodiments of the present invention are intended to fall within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating that the purpose, technical solution, and advantages of the method are clearer. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort indicate or imply the relative importance of the indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] Reference Figures 1-10As shown, the present invention provides a method for controlling the discharge of waste lithium batteries, which is based on a discharge recycling device. Specifically, the discharge recycling device includes: a measuring platform 16 for measuring battery dimensions, a milling section discharge conveyor belt on the side of the measuring platform 16 near the discharge end, and several three-dimensional storage cabinets 30 on both sides of the milling section discharge conveyor belt; an adaptive distribution and adjustment structure 31, including a discharge robot mounting platform 311 mounted on the milling section discharge conveyor belt, on which loading and unloading robots 312 are mounted. The loading and unloading robots 312 clamp the batteries transported from the milling section discharge conveyor belt into the cabinets of the empty three-dimensional storage cabinets 30, and remove the discharged batteries and move them to the milling section discharge conveyor belt; and a discharge device, including several battery discharge mounting racks 21 mounted on the three-dimensional storage cabinets 30, with two discharge modules 22 mounted on each battery discharge mounting rack 21. Copper sheets 27 are fixed to the discharge modules 22, and the copper sheets 27 are connected to terminals. The battery is connected to the discharge cabinet 32. The discharge module 22 is equipped with a heat dissipation structure and a discharge limiting structure 23 is provided on the opposite side of the discharge module 22. The battery discharge rack 21 is equipped with a dual-channel temperature detection structure 24. When the robot loads the battery onto the battery discharge rack 21, the discharge limiting structure 23 pushes the battery onto the discharge module 22, so that the battery terminals contact the copper sheet 27 and energize the terminals to discharge the battery. The current distribution structure includes several discharge cabinets 32 installed inside the automated storage cabinet 30. All the discharge cabinets 32 are connected to the same terminal. The number of discharge cabinets 32 corresponds one-to-one with the number and position of the battery discharge racks 21. The encoder of the measuring table 16 is electrically connected to the loading and unloading robot 312. The loading and unloading robot 312 is electrically connected to the discharge cabinets 32. When the loading and unloading robot 312 transfers the measured battery to the corresponding battery discharge rack 21, the discharge cabinet 32 ​​corresponding to the battery discharge rack 21 outputs a current of the corresponding size according to the size of the battery.

[0035] Existing technologies employ some automated storage and retrieval systems (AS / RS) for battery storage. However, the layout of the entire warehouse is narrow, the loading and unloading paths are complex, and the loading and unloading stages need to be completely separated. Furthermore, the small spacing between the compartments can easily affect the surrounding batteries. Therefore, this invention first adopts an adaptive distribution and adjustment structure 31, using a loading and unloading robot 312 to replace manual loading and unloading, thereby avoiding potential dangers associated with manual loading. The AS / RS cabinet 30 is positioned at both ends, with the loading and unloading robot 312 positioned in the center, allowing it to reach each compartment of the AS / RS cabinet 30. During the loading interval, the discharged batteries are removed, thus forming a virtuous cycle.

[0036] To reduce the number of loading / unloading robots 312 and avoid multiple reciprocating movements of the loading / unloading robots 312, the output end of the loading / unloading robot 312 of the present invention is provided with a dual-station mounting plate 3121. The lower end of the dual-station mounting plate 3121 is provided with two transfer stations 3122. The transfer stations 3122 are provided with bidirectional clamping motor units 3123, so that the unloading of the other station can be completed while loading, thereby reducing the number of processes.

[0037] Because batteries vary in size and charge content, using the same discharge current for batteries of different sizes can result in either incomplete discharge or overheating. Therefore, this invention addresses this by implementing a current distribution structure with multiple discharge cabinets 32 within the automated storage cabinet 30. This allows for different current outputs on different battery discharge racks 21. The battery dimensions are first measured by a measuring table 16, and then a loading / unloading robot 312 clamps the battery onto any of the battery discharge racks 21. The discharge cabinet 32 ​​in the rack 21 interfaces with the battery size information obtained by the robot, comparing this size with pre-stored dimensions in a database to output the optimal current for that battery size. This ensures the battery achieves optimal discharge performance, resulting in both thorough and rapid discharge.

[0038] Existing technologies directly use high current for discharge, resulting in very fast discharge speeds. However, under high power conditions, the battery temperature rises rapidly, easily leading to overheating, fire, spontaneous combustion, or explosion, posing a significant safety risk. Therefore, this invention addresses this by directly mounting a heat dissipation structure on the discharge module 22 and using a discharge limiting structure 23 to push the battery into contact with the discharge module 22. This allows heat to be promptly dissipated into the discharge module 22 and quickly discharged, thus preventing overheating and fire even with slightly higher currents.

[0039] To improve the heat dissipation effect of the discharge module 22 and avoid the disadvantage of solid structure in heat dissipation, the discharge module 22 in this embodiment includes a module mounting base 221 locked on the battery discharge mounting frame 21. A hollow aluminum base 222 is locked on the module mounting base 221, and the copper sheet 27 is locked on the aluminum base 222. The position where the copper sheet 27 of the discharge module 22 is installed is made into a hollow aluminum base 222, which can improve the overall heat dissipation effect. The module mounting base 221 provides certain support and fixation, so that the aluminum base 222 has a certain pressure bearing capacity.

[0040] To fully utilize the heat dissipation effect of the aluminum base 222, the heat dissipation structure in this embodiment includes several heat dissipation fins 251 and an external fan 252. The heat dissipation fins 251 are disposed on the four sides inside the aluminum base 222, and the external fan 252 is disposed on the axial direction of one of the aluminum bases 222. The heat generated during battery discharge is dissipated to the inner wall of the aluminum base 222 through the heat dissipation fins 251 and blown away by the external fan 252. The heat dissipation fins 251 are disposed inside the hollow aluminum base 222 to better dissipate heat. In order to guide the heat and avoid heat accumulation inside the aluminum base 222, the present invention also provides an external fan 252 on the axial direction of the aluminum base 222. The external fan 252 can dissipate heat in a timely manner, so that the battery temperature can always be kept within a relatively stable range.

[0041] In order to make the heat dissipation fins 251 as long as possible, the ends of the heat dissipation fins 251 on the same side in this embodiment are formed into an arc-shaped surface, so that the heat dissipation fins 251 can achieve the maximum heat dissipation effect without affecting each other.

[0042] To improve overall strength and make room for the dual-channel temperature detection structure 24 during installation, the module mounting base 221 in this embodiment includes a module mounting plate 2211 for locking the aluminum base 222. A U-shaped plate 2212 is integrally formed between the two module mounting plates 2211. The dual-channel temperature detection structure 24 is arranged on the projection line of the opening of the U-shaped plate 2212. Through the integrally formed module mounting plate 2211 and U-shaped plate 2212, the temperature control of the module mounting base 221 is enhanced.

[0043] To better monitor the battery temperature, the dual-channel temperature detection structure 24 in this embodiment includes a first temperature sensor 241 disposed on one side of the U-shaped plate 2212, and a second temperature sensor 242 disposed opposite to the first temperature sensor 241. The dual-channel temperature detection structure 24 means that the first temperature sensor 241 and the second temperature sensor 242 are disposed at the front and rear ends of the battery, respectively, to capture the battery temperature from the front and rear ends. When the battery temperature rises to the threshold, it can be processed in time by the robotic arm to avoid affecting the discharge operation at other locations.

[0044] To ensure the stability of the entire discharge process and avoid instability, this invention sets a discharge limiting structure 23 to limit the battery. However, to avoid the possibility of fire affecting the discharge limiting structure 23, the battery discharge mounting frame 21 in this embodiment has a clearance groove 211. The discharge limiting structure 23 includes a discharge push rod motor 231 disposed inside the battery discharge mounting frame 21. A heightening plate 232 penetrating the clearance groove 211 is connected to the baffle at the end of the discharge push rod motor 231. The width of the heightening plate 232 is smaller than the width of the clearance groove 211. A lever 233 is connected to the upper end of the heightening plate 232. The discharge limiting structure 23 is disposed inside the battery discharge mounting frame 21, with only the lever 233 protruding from the surface of the battery discharge mounting frame 21. The lever 233 moves the battery to abut against the copper plate, and the abutment method at the end also facilitates heat dissipation to the outside.

[0045] During the retraction of the lever 233, a limit post 26 is provided on the side of the lever 233 away from its position to limit its movement. In order to ensure the stability of the discharge push rod motor 231 during its movement, a guide post 234 is provided on the baffle at the end of the discharge push rod motor 231. The guide post 234 is sleeved on a discharge guide rod 235. The discharge guide rod 235 is fixed at both ends inside the battery discharge mounting frame 21 so that the discharge push rod motor 231 can be guided when it is pushed forward and retracted.

[0046] The present invention provides a method for controlling the discharge of recycled waste lithium batteries, comprising the following steps: S1: The battery size is measured by measuring table 16, and the measured battery size is compared with the data in the database to obtain the battery discharge scheme that is currently detected, the optimal discharge current scheme corresponding to the battery is obtained, and the discharge current scheme is transmitted to the receiver of loading and unloading robot 312. S2: The loading and unloading robot 312 clamps the measured battery and moves it to the non-operating battery discharge rack 21 to complete the loading. S3: After the battery is loaded, the discharge limiting structure 23 pushes the battery toward the discharge module 22, so that the battery terminals press against the copper sheet 27. S4: The loading and unloading robot 312 transmits the discharge current scheme determined by S1 to the discharge cabinet 32 ​​corresponding to the battery discharge rack 21 where the battery is placed. The discharge cabinet 32 ​​outputs the optimal current through the wiring terminal to conduct the copper sheet 27 to discharge the battery, so that the residual charge in the battery can be completely discharged. S5: The discharge cabinet 32 ​​disconnects the power supply after the time specified by the discharge current scheme, and then the loading and unloading robot 312 transfers the battery to the second half of the milling section's discharge conveyor belt.

[0047] Furthermore, when measuring the battery size, S1 obtains the actual size of the battery by extracting the boundary coordinates of the battery casing from the encoder and combining them with its own position data.

[0048] Furthermore, during the discharge process, the dual-path temperature detection structure 24 monitors the battery temperature. When the battery temperature exceeds the set threshold, the discharge device and current distribution structure are adjusted.

[0049] Furthermore, the threshold includes a first threshold, a second threshold, and a third threshold. When the battery temperature reaches the first threshold, the power of the external fan 252 reaches its maximum.

[0050] Furthermore, when the battery temperature reaches the second threshold, the current of the discharge cabinet 32 ​​decreases.

[0051] Furthermore, when the battery temperature reaches the third threshold, the discharge cabinet 32 ​​is closed, and the loading and unloading robot 312 transfers the battery to the water pool for fire extinguishing.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A method for controlling the discharge of recycled waste lithium batteries, characterized in that, Includes the following steps: S1: The size of the battery is measured by measuring table (16), and the measured battery size is compared with the data in the database to obtain the battery discharge scheme that is currently detected, the optimal discharge current scheme corresponding to the battery is obtained, and the discharge current scheme is transmitted to the receiver of the loading and unloading robot (312). S2: The loading and unloading robot (312) clamps the measured battery and moves it to the non-operating battery discharge rack (21) to complete the loading. S3: After the battery is loaded, the battery is pushed towards the discharge module (22) by the discharge limiting structure (23) so that the battery terminals press against the copper sheet (27); S4: The loading and unloading robot (312) transmits the discharge current scheme determined by S1 to the discharge cabinet (32) corresponding to the battery discharge rack (21) where the battery is placed. The discharge cabinet (32) outputs the optimal current through the terminal block to conduct the copper sheet (27) to discharge the battery, so that the residual charge in the battery can be completely discharged. S5: The discharge cabinet (32) disconnects the power supply after the time specified by the discharge current scheme, and then the battery is transferred to the second half of the milling section discharge conveyor belt by the loading and unloading robot (312).

2. The method for controlling the discharge of recycled waste lithium batteries according to claim 1, characterized in that, When measuring the battery size, S1 extracts the battery casing boundary coordinates from the encoder and combines them with its own position data to obtain the actual size of the battery.

3. The method for controlling the discharge of recycled waste lithium batteries according to claim 1, characterized in that, Also includes: The discharge device includes several battery discharge racks (21) installed on a three-dimensional warehouse cabinet (30). Each battery discharge rack (21) has two discharge modules (22). Each discharge module (22) has a copper sheet (27) fixedly connected to it. The copper sheet (27) is connected to the discharge cabinet (32) through a terminal block. Each discharge module (22) has a heat dissipation structure. Each discharge module (22) has a discharge limiting structure (23) facing upwards. Each battery discharge rack (21) has a dual-channel temperature detection structure (24). When the robot loads the battery onto the battery discharge rack (21), the battery is pushed onto the discharge module (22) through the discharge limiting structure (23), so that the battery terminals contact the copper sheet (27) and energize the terminal block to discharge the battery.

4. The method for controlling the discharge of recycled waste lithium batteries according to claim 3, characterized in that, Also includes: The current distribution structure includes several discharge cabinets (32) set inside the three-dimensional warehouse cabinet (30). All the discharge cabinets (32) are connected to the same terminal. The number of discharge cabinets (32) corresponds one-to-one with the number and position of the battery discharge racks (21). The encoder of the measuring table (16) is electrically connected to the loading and unloading robot (312). The loading and unloading robot (312) is electrically connected to the discharge cabinets (32). When the loading and unloading robot (312) transfers the measured battery to the corresponding battery discharge rack (21), the discharge cabinet (32) corresponding to the battery discharge rack (21) outputs a current of the corresponding size according to the size of the battery.

5. The method for controlling the discharge of recycled waste lithium batteries according to claim 4, characterized in that, The heat dissipation structure includes several heat dissipation fins (251) and an external fan (252). The heat dissipation fins (251) are arranged on four sides inside the aluminum base (222). The external fan (252) is arranged on the axial direction of one of the aluminum bases (222). The heat generated when the battery discharges is dissipated through the heat dissipation fins (251) to the inner wall of the aluminum base (222) and blown away by the external fan (252).

6. The method for controlling the discharge of recycled waste lithium batteries according to claim 5, characterized in that, The dual-channel temperature detection structure (24) includes a first temperature sensor (241) disposed on one side of the discharge module (22), and a second temperature sensor (242) disposed opposite to the first temperature sensor (241).

7. The method for controlling the discharge of recycled waste lithium batteries according to claim 6, characterized in that, During the discharge process, the dual-path temperature detection structure (24) monitors the temperature of the battery. When the temperature of the battery exceeds the set threshold, the discharge device and the current distribution structure are adjusted.

8. The method for controlling the discharge of recycled waste lithium batteries according to claim 7, characterized in that, The threshold includes a first threshold, a second threshold, and a third threshold. When the battery temperature reaches the first threshold, the power of the external fan (252) reaches its maximum.

9. The method for controlling the discharge of recycled waste lithium batteries according to claim 7, characterized in that, When the battery temperature reaches the second threshold, the current of the discharge cabinet (32) decreases.

10. The method for controlling the discharge of recycled waste lithium batteries according to claim 7, characterized in that, When the battery temperature reaches the third threshold, the discharge cabinet (32) is closed, and the loading and unloading robot (312) transfers the battery to the water pool for fire extinguishing.

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