Battery pole piece crushing and stripping system

Abstract

The utility model discloses a crushing and stripping system for a battery pole piece. The crushing and stripping system comprises a pre-crusher, a mechanical crusher, an airflow classifier and a cyclone collector which are sequentially arranged along a stripping path of the battery pole piece, the fan is arranged at the output end of the battery pole piece stripping path, and the fan provides negative pressure for the battery pole piece stripping path; a first dust remover and a second dust remover are arranged on the battery pole piece stripping path. According to the battery pole piece crushing and stripping system disclosed by the utility model, dust leakage is avoided during crushing and stripping, automatic operation is adopted, and stripped black powder and metal have relatively high purity.

Description

Technical Field

[0001] The utility model relates to the field of battery pole piece stripping and recycling, in particular to a battery pole piece crushing and stripping system. Background Art

[0002] In recent years, with the retirement of the first batch of electric vehicles, in order to achieve sustainable development of resources and waste utilization, the power batteries in electric vehicles are disassembled to obtain the positive and negative electrodes of the battery. The positive electrode includes lithium iron phosphate electrode and ternary electrode. The negative electrode is graphite sprayed on copper foil, the iron lithium electrode is lithium iron phosphate sprayed on aluminum foil, and the ternary electrode is ternary sprayed on aluminum foil. They are composed of positive iron lithium electrode and negative graphite electrode, positive electrode ternary electrode and negative graphite electrode. Dry stripping of the positive or negative electrode can obtain aluminum, copper, graphite, lithium iron phosphate, and ternary. The purified substances are supplied according to market demand.

[0003] How to obtain high-purity recyclables during dry stripping of positive and negative electrode sheets of a battery is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a battery pole piece crushing and stripping system to address the deficiencies of the prior art, which includes:

[0005] A pre-crusher, a mechanical crusher, an airflow classifier and a cyclone collector are sequentially arranged along the battery electrode stripping path; the output end of the pre-crusher is connected to the input end of the mechanical crusher through a pipeline; the mechanical crusher also includes a black powder output end and a metal output end, the black powder output end is connected to the input end pipeline of the cyclone collector; the metal output end is connected to the input end pipeline of the airflow classifier;

[0006] A fan, which is arranged at the output end of the battery electrode stripping path, and the fan provides negative pressure for the battery electrode stripping path;

[0007] A first dust collector and a second dust collector are arranged on the battery electrode stripping path, wherein the first dust collector is connected to the pre-crusher and the air flow classifier through pipelines, respectively, and the second dust collector is connected to the cyclone collector and the fan through pipelines, respectively.

[0008] In certain embodiments, in the battery electrode sheet crushing and stripping system, the first dust collector further includes a lower end discharge port, and the lower end discharge port is connected to the input end pipeline of the mechanical pulverizer.

[0009] In certain embodiments, in the battery pole piece crushing and stripping system, the air flow classifier also includes a metal discharge port.

[0010] In certain embodiments, in the battery pole piece crushing and stripping system, the mechanical pulverizer includes a moving disc, a stationary disc, a material guide screw and a grading wheel.

[0011] In certain embodiments, in the battery pole piece crushing and stripping system, the moving disk and the stationary disk cooperate to strip the black powder from the crushed battery pole piece.

[0012] In certain embodiments, in the battery pole piece crushing and stripping system, the material guide screw guides the metal stripped from the black powder to the air flow classifier, and the air flow classifier performs secondary screening on the copper or aluminum.

[0013] In certain embodiments, in the battery pole piece crushing and stripping system, the grading wheel shears the stripped black powder and transports the sheared black powder to the cyclone collector.

[0014] In certain embodiments, the battery pole piece crushing and stripping system further includes a conveyor belt, which transports the battery pole pieces to be stripped to the pre-crusher.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model discloses a battery pole piece crushing and stripping system, wherein the battery pole pieces to be stripped are transported to a pre-crusher through a conveyor belt, the battery pole pieces are broken up into small pieces in the pre-crusher, the crushed materials are transported to a mechanical crusher under the negative pressure generated by a fan, dry stripping is performed in the mechanical crusher, the moving disc and the static disc in the mechanical crusher separate the black powder from the crushed battery pole pieces, the metal separated from the black powder in the mechanical crusher is guided to an air flow classifier through a material guide spiral, secondary screening is performed in the air flow classifier, the screened metal is discharged through a metal discharge port, during the secondary screening process, the metal-doped black powder is discharged into a first dust collector, the lower end discharge port of the first dust collector is connected to the mechanical crusher, the black powder in the first dust collector is discharged to the mechanical crusher through the discharge port, and is recycled again; the high-speed rotating classifying wheel in the mechanical crusher shears the separated black powder, and the black powder without impurities enters a cyclone collector for collection.

[0017] 2. The battery pole piece crushing and stripping system described in the utility model has high stripping and recovery purity and realizes dust-free operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the battery pole piece crushing and stripping system described in the utility model.

[0019] In the figure: 1-pre-crusher, 2-mechanical pulverizer, 3-air flow classifier, 4-cyclone collector, 5-fan, 6-first dust collector, 7-second dust collector, 8-conveyor belt. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention.

[0021] like Figure 1 As shown, a battery pole piece crushing and stripping system comprises:

[0022] A pre-crusher 1, a mechanical crusher 2, an airflow classifier 3 and a cyclone collector 4 are sequentially arranged along the battery electrode stripping path; the output end of the pre-crusher 1 is connected to the input end of the mechanical crusher 2 through a pipeline; the mechanical crusher 2 also includes a black powder output end and a metal output end, the black powder output end is connected to the input end pipeline of the cyclone collector 4; the metal output end is connected to the input end pipeline of the airflow classifier 3;

[0023] A fan 5, which provides negative pressure for the battery electrode stripping path;

[0024] A first dust collector 6 and a second dust collector 7 are arranged on the battery electrode stripping path, wherein the first dust collector 6 is connected to the pre-crusher 1 and the air flow classifier 3 through pipelines, respectively, and the second dust collector 7 is connected to the cyclone collector 4 and the fan 5 through pipelines.

[0025] The materials and the air are separated in the first dust collector 6 and the second dust collector 7. The materials remain in the first dust collector and / or the second dust collector 7, and the purified air is discharged through the pipeline.

[0026] The utility model discloses a battery pole piece crushing and stripping system, wherein the battery pole piece to be stripped is transported to a pre-crusher 1 through a conveyor belt 8, and the battery pole piece is broken up into small pieces in the pre-crusher 1. The material enters the pre-crusher 1, and the blade in the pre-crusher 1 breaks it into small pieces and breaks it up, so as to prevent the pole pieces from overlapping and affecting the effect of later stripping. Under the negative pressure generated by the fan 5, the crushed material is transported to a mechanical crusher 2, and dry stripping is performed in the mechanical crusher 2. The moving disk and the static disk in the mechanical crusher 2 separate the black powder from the crushed battery pole piece. The metal separated from the black powder in the machine 2 is guided into the airflow classifier 3 through the guide screw, and is subjected to secondary screening in the airflow classifier 3. The screened metal is discharged through the metal discharge port. During the secondary screening process, the metal-doped black powder is discharged into the first dust collector 6. The lower discharge port of the first dust collector 6 is connected to the mechanical crusher 2. The black powder in the first dust collector 6 is discharged into the mechanical crusher 2 through the discharge port for recycling again. The high-speed rotating classifying wheel in the mechanical crusher 2 shears the separated black powder, and the black powder without impurities enters the cyclone collector 4 for collection.

[0027] In the above solution, the first dust collector 6 also includes a lower end discharge port, and the lower end discharge port is connected to the input end of the mechanical crusher 2.

[0028] When the airflow classifier 3 performs secondary screening, the separated black powder is discharged into the first dust collector 6, and is recovered to the mechanical crusher 2 at the lower end discharge port for a second recovery. Finally, the black powder output end of the mechanical crusher 2 is transported to the cyclone recovery device for recovery.

[0029] In the above solution, the air flow classifier 3 also includes a metal discharge port.

[0030] The metal discharge port is arranged at the lower end of the airflow classifier 3, and the metals such as copper and aluminum after classification and screening are discharged and recycled through the metal discharge port. The discharged metals (copper and aluminum) are of high purity and have a very low content of black powder.

[0031] In the above scheme, the mechanical pulverizer 2 includes a moving disc, a stationary disc, a material guiding screw and a classifying wheel.

[0032] In the above scheme, the moving disk and the stationary disk cooperate to peel off the black powder from the broken battery pole piece.

[0033] The mechanical pulverizer 2 is divided into two stripping chambers. The first stripping chamber includes a moving plate and a stationary plate for coarse crushing and stripping, and the second stripping chamber includes a guide screw and a grading wheel for fine stripping and auxiliary grading wheel sorting.

[0034] In the above scheme, the material guide screw guides the metal stripped from the black powder to the air flow classifier 3, and the air flow classifier 3 performs secondary screening on the metal.

[0035] In the above solution, the grading wheel shears the peeled black powder and transports the sheared black powder to the cyclone collector 4.

[0036] The above solution also includes a conveyor belt 8, which transports the battery pole pieces to be peeled to the pre-crusher 1.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A battery pole piece crushing and stripping system, characterized in that: It includes: A pre-crusher (1), a mechanical crusher (2), an airflow classifier (3) and a cyclone collector (4) are sequentially arranged along the battery electrode stripping path; the output end of the pre-crusher (1) is connected to the input end of the mechanical crusher (2) through a pipeline; the mechanical crusher (2) also includes a black powder output end and a metal output end, the black powder output end is connected to the input end pipeline of the cyclone collector (4); the metal output end is connected to the input end pipeline of the airflow classifier (3); A fan (5) is arranged at the output end of the battery electrode stripping path, and the fan (5) provides negative pressure for the battery electrode stripping path; A first dust collector (6) and a second dust collector (7) are arranged on the battery electrode stripping path, wherein the first dust collector (6) is connected to the pre-crusher (1) and the airflow classifier (3) through pipelines, and the second dust collector (7) is connected to the cyclone collector (4) and the fan (5) through pipelines.

2. The battery pole piece crushing and stripping system according to claim 1, characterized in that: The first dust collector (6) also includes a lower end discharge port, and the lower end discharge port is connected to the input end pipeline of the mechanical crusher (2).

3. The battery pole piece crushing and stripping system according to claim 1, characterized in that: The air flow classifier (3) also includes a metal discharge port.

4. The battery pole piece crushing and stripping system according to claim 1, characterized in that: The mechanical pulverizer (2) comprises a moving disc, a stationary disc, a material guiding screw and a classifying wheel.

5. The battery pole piece crushing and stripping system according to claim 4, characterized in that: The moving disk and the stationary disk cooperate to peel off the black powder from the broken battery pole pieces.

6. The battery pole piece crushing and stripping system according to claim 4, characterized in that: The material guide screw guides the metal stripped from the black powder to the air flow classifier (3), and the air flow classifier (3) performs secondary screening on the metal.

7. The battery pole piece crushing and stripping system according to claim 4, characterized in that: The classifying wheel shears the peeled black powder and transports the sheared black powder to the cyclone collector (4).

8. The battery pole piece crushing and stripping system according to claim 1, characterized in that: It also includes a conveyor belt (8) which transports the battery pole pieces to be peeled to the pre-crusher (1).

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