CN-224217525-U - Discharging and electrolyte recycling equipment for waste batteries

Abstract

The utility model provides a discharging and electrolyte recycling device of waste batteries, which comprises a discharger, a heater and a negative pressure recycling device, wherein the discharger is used for discharging the waste batteries, the heater comprises a heat source, a first heating end and a second heating end which are connected with the heat source and conduct heat, and the negative pressure recycling device comprises a suction pipe, a condensing device connected with the suction pipe and a vacuum pump used for providing suction pressure for the suction pipe. The utility model provides a waste battery discharging and electrolyte recycling device, which comprises a heater, wherein a first heating end of the heater is directly connected with a positive pole column of a waste battery in a heat conduction way, so that the positive pole column can directly transfer heat to a positive pole current collector, and a second heating end of the heater is directly connected with a negative pole column of the waste battery in a heat conduction way, so that the negative pole column can directly transfer heat to a negative pole current collector, further the current collector in the waste battery can be heated rapidly, the internal heating of the waste battery can be ensured to be more uniform, and the vaporization of electrolyte is quicker and more uniform.

Inventors

• LIU HUIQUAN
• LIANG JUNWEN
• Dai Huajiang

Assignees

• 湖南天润循环科技有限公司

Dates

Publication Date

20260508

Application Date

20250414

Claims (10)

1. 1. The utility model provides a discharge and electrolyte recovery plant of junked battery which characterized in that includes: the discharger is arranged at the discharging station and is used for discharging the waste batteries; the waste battery heating device comprises a heating station, a heater, a heating device and a control device, wherein the heating station is arranged and comprises a heat source, a first heating end and a second heating end which are connected with the heat source in a heat conduction manner; And the negative pressure recoverer is arranged at the heating station and comprises a suction pipe, a condensing device connected with the suction pipe and a vacuum pump for providing suction pressure for the suction pipe, and when the waste batteries are positioned at the heating station, the suction pipe is inserted into a safety valve of the waste batteries.
2. 2. The apparatus for discharging and recovering electrolyte from a waste battery as defined in claim 1, wherein said discharger comprises a discharge resistor, a positive electrode access terminal and a negative electrode access terminal electrically connected to said discharge resistor, said positive electrode access terminal being electrically connected to a positive electrode post of said waste battery and said negative electrode access terminal being electrically connected to a negative electrode post of said waste battery when said waste battery is at said discharge station.
3. 3. The apparatus for discharging and recovering electrolyte from waste batteries as claimed in claim 2, wherein the discharging resistor of said discharger is in contact with a heat source of said heater, said heat source absorbing heat generated by said discharging resistor.
4. 4. The apparatus for discharging and recovering electrolyte from a waste battery as defined in claim 2, further comprising a station switching platform for supporting said waste battery and moving said waste battery between said discharging station and said heating station.
5. 5. The apparatus for discharging and recovering electrolyte from waste batteries as defined in claim 1, wherein said condensing means of said negative pressure recoverer comprises a first condensing tube connected to said suction tube, and said first condensing tube has a condensing temperature of 5 ℃ to 15 ℃.
6. 6. The apparatus for discharging and recovering electrolyte from waste batteries as defined in claim 5, wherein said condensing means of said negative pressure recoverer further comprises a second condensing tube connected to said first condensing tube, and wherein a condensing temperature of said second condensing tube is-10 ℃ to-0 ℃.
7. 7. The apparatus for discharging and recovering electrolyte from a waste battery as defined in claim 6, wherein said condensing means of said negative pressure recoverer further comprises a recovery tank including a tank body, a first recovery pipe connecting said first condensation pipe with said tank body, and a second recovery pipe connecting said second condensation pipe with said tank body.
8. 8. The apparatus for discharging and recovering electrolyte from waste batteries as defined in claim 1, wherein said vacuum pump is 10-45kpa, and said vacuum pump is fixedly connected to said condensing means.
9. 9. The apparatus for discharging and recovering electrolyte from waste batteries as defined in claim 1, wherein said heater has a heating temperature of 100 ℃ to 150 ℃.
10. 10. The apparatus for discharging and recovering electrolyte from waste batteries as defined in claim 1, wherein said heater further comprises a heat-insulating jacket disposed on said heating station and sleeved outside said waste batteries.

Description

Discharging and electrolyte recycling equipment for waste batteries Technical Field The utility model relates to the technical field of waste battery recovery, in particular to a waste battery discharging and electrolyte recovery device. Background The power battery in the new energy automobile is a core product in the current battery field. With the continuous development of the new energy automobile industry, the recovery of the power battery is also an important problem to be solved urgently. When the power battery reaches the service life, the power battery needs to be retired to enter a battery recycling market for recycling. The power battery meeting the use conditions of partial scenes can be degraded and used to be applied to the new field, and the power battery which does not meet the use standard is required to be disassembled, effective materials in the power battery are extracted for recycling, so that pollution to the environment caused by scrapping of the power battery is reduced to the greatest extent. At present, the recovery of waste power batteries in the industry is mainly divided into three modes of dry recovery, wet recovery and physical recovery. The three recovery modes all need to discharge and then crush the waste power batteries, so as to recover the high-valence metal elements in the waste power batteries. In the current industry, the electrolyte is generally recovered by immersing and discharging the waste power batteries in brine, crushing the batteries and burning the batteries, and condensing the gas volatilized after burning to recover the electrolyte in the waste batteries. The method for recycling the electrolyte has the following problems that 1, the waste power batteries are easy to generate short circuit and thermal runaway due to the electrolyte contained in the waste power batteries in the transportation and storage processes, 2, the waste power batteries are soaked and discharged by adopting salt water, and the power batteries are soaked for a long time to ensure that the discharge is finished due to the fact that the residual electric quantity of each waste power battery is not fixed, so that the efficiency of a discharging step is low and the discharging result is inconsistent, and the waste power batteries are easy to damage and leak in the soaking process, so that a soaking solution is polluted. In chinese publication No. CN109346739B, a device and a method for recovering lithium ion battery electrolyte are provided. In the recycling device, the heating device is attached to the lithium ion battery, the heating device heats the lithium ion battery through the shell of the lithium ion battery, the heating mode is low in efficiency, the inside of the lithium ion battery is heated unevenly, the lithium ion battery with small size can be heated in an attaching mode, however, for the lithium ion battery with large size or large electrolyte capacity, the electrolyte cannot be fully recycled by adopting the heating mode, electrolyte can be remained in the lithium ion battery, and the recycling efficiency is low due to slow heating and uneven heating. In chinese publication No. CN116053635B, a method for recovering electrolyte of lithium ion battery is provided. In the recovery method, a lithium battery is filled into a vacuum chamber with a set temperature, and the temperature of the vacuum chamber is adjusted so that the temperature of the vacuum chamber reaches the set temperature. In this method, the recovery cost of the electrolyte of the lithium battery is extremely high, and it is necessary to prepare a vacuum chamber capable of accommodating the lithium battery in batch, and then it is necessary to adjust the temperature in the vacuum chamber. The two points greatly increase the cost of electrolyte recovery, and are not beneficial to the popularization and promotion of the method. Therefore, how to effectively recycle the electrolyte in the waste power batteries and how to improve the recycling production efficiency and the electrolyte recycling efficiency of the waste power batteries are all the problems to be solved in the battery recycling industry. Disclosure of utility model The utility model aims to solve the defects that in the recycling process of the existing waste power battery, electrolyte is easy to generate short circuit and thermal runaway, the electrolyte is recycled in a brine soaking discharge mode, the recycling time is long, the efficiency is low, the equipment recycled by a vacuum device is high in cost and large in occupied space, the recycling cost is high, and popularization is not facilitated. The technical scheme includes that the discharging and electrolyte recycling device for the waste batteries comprises a discharger, a heater, a negative pressure recoverer and a vacuum pump, wherein the discharger is arranged at a discharging station and is used for discharging the waste batteries, the heater is arranged at a heating station and compr