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CN-122000519-A - Recycling and discharging control method of waste lithium batteries

CN122000519ACN 122000519 ACN122000519 ACN 122000519ACN-122000519-A

Abstract

The invention discloses a recycling discharge control method of waste lithium batteries, which comprises the steps of S1, measuring the sizes of the batteries through a measuring table, comparing the measured sizes of the batteries with data in a database to obtain a battery discharge scheme matched with the currently detected batteries, and obtaining an optimal discharge current scheme corresponding to the batteries, S2, enabling an upper discharging manipulator to clamp the measured batteries to charge, S3, enabling a pole post of the batteries to be pressed against a copper sheet, S4, enabling a discharge cabinet to output optimal current through a wiring terminal to conduct the copper sheet to discharge the batteries, and S5, enabling the upper discharging manipulator to transfer the batteries to the second half section of a milling section discharge conveying belt, and enabling the optimal discharge current to be matched to discharge the batteries.

Inventors

  • DAI YUANSHEN
  • ZHANG YUE
  • WANG RUZHOU
  • HU WENJUN
  • Xiang Renyong

Assignees

  • 福建常青新能源科技有限公司
  • 巴斯夫（中国）有限公司
  • 成都祐健科技有限公司

Dates

Publication Date
20260508
Application Date
20260410

Claims (10)

  1. 1. The recovery discharge control method of the waste lithium battery is characterized by comprising the following steps of: S1, measuring the size of a battery through a measuring table (16), comparing the measured battery size with data in a database to obtain a battery discharging scheme which is matched with the currently detected battery, obtaining an optimal discharging current scheme corresponding to the battery, and transmitting the discharging current scheme into a transceiver of an upper discharging manipulator (312); s2, enabling the loading and unloading manipulator (312) to clamp the measured battery, and moving the battery into the battery discharging rest (21) which does not operate through the loading and unloading manipulator (312) to finish loading; s3, pushing the battery to the direction of a discharging module (22) through a discharging limiting structure (23) after the battery is fed, so that a pole post of the battery is pressed against a copper sheet (27); S4, the charging and discharging mechanical arm (312) transmits the discharging current scheme judged in the S1 to a discharging cabinet (32) corresponding to a battery discharging rack (21) for placing the battery, and the discharging cabinet (32) outputs the optimal current through a wiring terminal to conduct a copper sheet (27) to discharge the battery, so that the residual electric quantity in the battery can be completely discharged; And S5, the discharging cabinet (32) cuts off the power supply after the specified time of the discharging current scheme, and then the battery is transported to the second half section of the milling section discharging conveying belt through the feeding and discharging mechanical arm (312).
  2. 2. The method for controlling the recovery discharge of the waste lithium battery according to claim 1, wherein the step S1 is to extract the boundary coordinates of the battery case through the encoder and combine the position data to obtain the actual size of the battery when the size of the battery is measured.
  3. 3. The method for recycling and discharging the waste lithium batteries according to claim 1, further comprising a discharging device, wherein the discharging device comprises a plurality of battery discharging rest frames (21) arranged on a stereoscopic warehouse cabinet (30), two discharging modules (22) are arranged on the battery discharging rest frames (21), copper sheets (27) are fixedly connected to the discharging modules (22), the copper sheets (27) are connected into the discharging cabinet (32) through connecting terminals, a heat dissipation structure is arranged on the discharging modules (22), a discharging limit structure (23) is arranged on the opposite side of the discharging modules (22), a two-way temperature detection structure (24) is arranged on the battery discharging rest frames (21), and after a manipulator loads the batteries to the battery discharging rest frames (21), the batteries are pushed onto the discharging modules (22) through the discharging limit structure (23), so that poles of the batteries are contacted with the copper sheets (27) and a butt-joint terminal is electrified to discharge the batteries.
  4. 4. The method for controlling recycling discharge of waste lithium batteries according to claim 3, further comprising a current distribution structure, wherein the current distribution structure comprises a plurality of discharging cabinets (32) arranged inside the stereoscopic warehouse cabinet (30), all the discharging cabinets (32) are connected to the same terminal, the number of the discharging cabinets (32) is in one-to-one correspondence with the number and positions of the battery discharging rest (21), an encoder of the measuring table (16) is electrically connected with an feeding and discharging manipulator (312), the feeding and discharging manipulator (312) is electrically connected with the discharging cabinets (32), and when the feeding and discharging manipulator (312) transfers the measured batteries to the corresponding battery discharging rest (21), the discharging cabinets (32) corresponding to the battery discharging rest (21) output currents with corresponding sizes according to the sizes of the batteries.
  5. 5. The method for controlling recycling discharge of waste lithium batteries according to claim 4, wherein the heat dissipation structure comprises a plurality of heat dissipation fins (251) and an external fan (252), the heat dissipation fins (251) are arranged on four surfaces inside the aluminum material seat (222), the external fan (252) is arranged on the axial direction of one aluminum material seat (222), and heat generated during discharging of the batteries is dissipated to the inner wall of the aluminum material seat (222) through the heat dissipation fins (251) and blown away through the external fan (252).
  6. 6. The method for controlling the recovery discharge of the waste lithium batteries according to claim 5, wherein the two-way temperature detection structure (24) comprises a first temperature sensor (241) arranged on one side of the discharge module (22), and a second temperature sensor (242) is arranged on the opposite side of the first temperature sensor (241).
  7. 7. The method for controlling the recovery discharge of waste lithium batteries according to claim 6, wherein the two-way temperature detection structure (24) monitors the temperature of the batteries during the discharge process, and the discharge device and the current distribution structure are adjusted when the temperature of the batteries is monitored to exceed a set threshold value.
  8. 8. The method for controlling the recovery discharge of the waste lithium battery according to claim 7, wherein the threshold comprises a first threshold, a second threshold and a third threshold, and the power of the external fan (252) is maximized when the battery temperature reaches the first threshold.
  9. 9. The method for controlling the recovery discharge of waste lithium batteries according to claim 7, wherein the current of the discharge tank (32) is reduced when the battery temperature reaches a second threshold value.
  10. 10. The method for controlling the recovery discharge of waste lithium batteries according to claim 7, wherein when the battery temperature reaches a third threshold value, the discharge cabinet (32) is closed, and the loading and unloading manipulator (312) transfers the battery into a water tank to extinguish the fire.

Description

Recycling and discharging control method of waste lithium batteries Technical Field The invention relates to a battery recycling method, in particular to a waste lithium battery recycling discharge control method. Background The lithium battery is used as a main carrier of new energy, and consists of copper aluminum foil, nickel, cobalt, lithium manganate, graphite, electrolyte, diaphragm paper and the like, and in the process of recycling the lithium battery, if the battery in a charged state is extruded and punctured in the recycling process, the battery can trigger the reaction to cause fire or explosion, so that the battery needs to be discharged before recycling, and most of the prior batteries use a resistor load or special discharging equipment to slowly release residual electric energy. When the traditional equipment discharges the battery, for the safety problem, the discharge is usually carried out by adopting a small current mode, but the discharge can be carried out safely, but when two hours have passed after the battery is discharged, the discharge efficiency is quite low, so the existing direct discharge mode adopting a large current mode has quite high discharge speed, but the discharge is carried out in a high power state, the temperature of the battery rises quite fast, the temperature of the battery is easy to overheat and fire or explode, and the safety is quite poor, so how to discharge the battery safely and efficiently is always a pain point of enterprises. The scheme aims to provide a recovery discharge control method of waste lithium batteries, which can adapt to the most suitable current to discharge the batteries in the battery discharge stage, monitor the temperature of the batteries in real time, and make different disposal means in the process of raising the temperature of the batteries so as to safely and efficiently discharge the waste batteries. Disclosure of Invention The invention provides a recycling discharge control method of waste lithium batteries, which can effectively solve the problems. The invention is realized in the following way: A recycling discharge control method of waste lithium batteries 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 discharging scheme matched with the currently detected battery, obtaining an optimal discharging current scheme corresponding to the battery, and transmitting the discharging current scheme into a hair extension device of an upper discharging manipulator and a lower discharging manipulator; S2, enabling the loading and unloading manipulator to clamp the measured battery, and moving the battery into an unoperated battery discharging rest through the loading and unloading manipulator to finish loading; s3, pushing the battery to the direction of the discharging module through a discharging limiting structure after the battery is fed, so that a pole of the battery is propped against the copper sheet; S4, the charging and discharging mechanical arm transmits the discharging current scheme judged in the step S1 to a discharging cabinet corresponding to a battery discharging placement frame for placing the battery, and the discharging cabinet outputs the optimal current through a wiring terminal to conduct a copper sheet to discharge the battery, so that the residual electric quantity in the battery can be completely discharged; And S5, the discharging cabinet cuts off the power supply after the specified time of the discharging current scheme, and then the battery is transported to the second half section of the milling section discharging conveying belt through the feeding and discharging mechanical arm. As a further improvement, the S1 is to extract the boundary coordinates of the battery case by the encoder and combine the position data to obtain the actual size of the battery when the size of the battery is measured. The battery discharging device comprises a plurality of battery discharging placing frames arranged on a stereoscopic warehouse cabinet, wherein two discharging modules are arranged on the battery discharging placing frames, copper sheets are fixedly connected to the discharging modules, the copper sheets are connected into the discharging cabinet through wiring terminals, a heat dissipation structure is arranged on the discharging modules, a discharging limit structure is arranged on the opposite direction of the discharging modules, a two-way temperature detection structure is arranged on the battery discharging placing frames, and after a manipulator loads a battery to the battery discharging placing frames, the battery is pushed onto the discharging modules through the discharging limit structure, so that poles of the battery are contacted with the copper sheets, and the terminals of the copper sheets are electrified to discharge the battery. The battery discharging device is characteri