Lithium battery positive and negative electrode sheet powder removal line body

Abstract

The application is suitable for the technical field of lithium battery processing, and provides a lithium battery positive and negative electrode sheet powder removing line body, which comprises a soaking section conveyor belt and a spraying and dewatering section conveyor belt arranged and connected according to the material movement path, wherein the soaking section conveyor belt is installed in a hot water tank and used for soaking the electrode sheet, a spraying head and an air knife are installed on the spraying and dewatering section conveyor belt and used for repeatedly spraying and powder removing the soaked electrode sheet, and an electrode sheet feeding port and an aluminum foil discharging port are respectively arranged at the inlet of the soaking section conveyor belt and the outlet of the spraying and dewatering section conveyor belt. The beneficial effect of the embodiment of the application is that, through the electrode sheet soaking treatment, water / air force separation and stripping and other technologies, efficient and lossless operation of battery powder removing is realized, the limitation of the traditional technology is overcome, and a brand-new and competitive technical solution is provided for the battery recycling industry.

Description

Technical Field

[0001] The present invention belongs to the technical field of lithium battery processing, and in particular relates to a lithium battery positive and negative electrode sheet de-powdering line. Background Art

[0002] The effective recycling of batteries helps to solve the scarcity of key resources. Power batteries contain a variety of valuable resources such as lithium, nickel, cobalt, manganese and rare earths, which are all very important resources as raw materials.

[0003] Traditional technology involves direct battery crushing, which often presents numerous issues, such as incomplete powder removal, high energy consumption, and low efficiency. These issues not only impact the quality and recovery rate of recycled battery materials, but also increase processing costs. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a lithium battery positive and negative electrode sheet de-powdering line, which aims to solve the technical problems existing in the existing technology mentioned in the background technology.

[0005] An embodiment of the present invention is implemented as follows: a lithium battery positive and negative electrode de-powdering line body includes an impregnation section conveyor belt and a spray dehydration section conveyor belt arranged and connected according to the material movement path, wherein the impregnation section conveyor belt is installed in a hot water tank for impregnating the electrode sheet, and the spray dehydration section conveyor belt is installed with a spray head and an air knife for repeatedly spraying and de-powdering the electrode sheet after impregnation. The line body is respectively provided with an electrode sheet feed port and an aluminum foil discharge port at the inlet of the impregnation section conveyor belt and the outlet of the spray dehydration section conveyor belt.

[0006] Preferably, the hot water tank is connected to a water outlet pipe, a sewage pipe and a hot water supply pipe, and the hot water supply pipe and the water outlet pipe are used to keep the temperature in the hot water tank constant.

[0007] More preferably, a steam collector is installed at a position of the wire body close to the electrode feeding port, and the outlet end of the steam collector is connected to a dehumidifier for collecting and processing steam generated by the hot water tank.

[0008] More preferably, a collecting trough is installed at the position of the line body corresponding to the spray dehydration section conveyor belt, the collecting trough is used to collect the fallen powder, and a discharging auger is installed at the bottom end of the collecting trough.

[0009] More preferably, the spray heads and air knives are alternately arranged at the front section of the spray-dehydration section conveyor belt, and only the air knives are arranged at the rear section of the spray-dehydration section conveyor belt.

[0010] More preferably, a spray water inlet pipe and a spray water outlet pipe are installed at the position of the line body corresponding to the spray dehydration section conveyor belt, the spray water inlet pipe is connected to the spray head, and the spray water outlet pipe is connected to the bottom of the aggregate trough.

[0011] Compared with the existing technology, the beneficial effects of the embodiments of the present invention are: through technologies such as electrode infiltration treatment, water / wind sorting and stripping, efficient and non-destructive battery powder removal is achieved, overcoming the limitations of traditional technologies and providing a new and competitive technical solution for the battery recycling industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic structural diagram of a lithium battery positive and negative electrode sheet de-powdering line provided by an embodiment of the present invention;

[0013] Figure 2 A top view of a lithium battery positive and negative electrode sheet de-powdering line provided by an embodiment of the present invention;

[0014] Figure 3 A schematic diagram of the internal structure of a lithium battery positive and negative electrode sheet de-powdering line provided by an embodiment of the present invention.

[0015] In the figure: 1-electrode feeding port, 2-aluminum foil discharging port, 3-dehumidifier, 4-hot water tank, 5-infiltration section conveyor belt, 6-spray dehydration section conveyor belt, 7-spray head, 8-air knife, 9-collection trough, 10-discharging auger, 11-water outlet pipe, 12-drain pipe, 13-hot water supply pipe, 14-steam collector. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0017] It will be understood that the terms "first," "second," etc. used herein may be used to describe various elements, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish a first element from another element.

[0018] like Figures 1 to 3 As shown, in one embodiment, a lithium battery positive and negative electrode sheet de-powdering line is proposed, comprising an impregnation section conveyor belt 5 and a spray dehydration section conveyor belt 6 arranged and connected according to the material movement path, wherein the impregnation section conveyor belt 5 is installed in a hot water tank 4 for impregnating the electrode sheet, and the spray dehydration section conveyor belt 6 is provided with a spray head 7 and an air knife 8 for repeatedly spraying and de-powdering the electrode sheet after impregnation, and an electrode sheet feed port 1 and an aluminum foil discharge port 2 are respectively provided at the inlet of the impregnation section conveyor belt 5 and the outlet of the spray dehydration section conveyor belt 6 of the line.

[0019] In actual application of the embodiment of the present invention, the electrode is put into the impregnation section conveyor belt 5 through the electrode feed port 1, and the impregnation section conveyor belt 5 is conveyed to the hot water tank 4 for impregnation. In the embodiment of the present invention, the impregnation section conveyor belt 5 can be arranged as a broken line structure to improve the impregnation time and effect. Then the electrode will be sent to the spray dehydration section conveyor belt 6, and the spray head 7 and the wind knife 8 will work together to achieve de-powdering through wind or water power. The electrode after de-powdering, that is, the aluminum foil, is sent out through the aluminum foil discharge port 2.

[0020] In the embodiment of the present invention, only the key components of the line body are described, and the related auxiliary equipment such as the rack and protective cover are not described, but this does not affect the integrity of the technical solution.

[0021] The embodiments of the present invention achieve efficient and non-destructive battery powder removal through technologies such as electrode infiltration treatment and water / wind separation and stripping, overcome the limitations of traditional technologies, and provide a new and competitive technical solution for the battery recycling industry.

[0022] like Figure 2 As shown, as a preferred embodiment of the present invention, the hot water tank 4 is connected with a water outlet pipe 11, a sewage pipe 12 and a hot water supply pipe 13, and the hot water supply pipe 13 and the water outlet pipe 11 are used to keep the temperature in the hot water tank 4 constant.

[0023] In an embodiment of the present invention, the hot water supply pipe 13 is connected to an external hot water supply mechanism, such as a boiler. The hot water supply pipe 13 and the outlet pipe 11 can keep the temperature in the hot water tank 4 constant, and the sewage pipe 12 is used to conveniently empty the internal water body during equipment maintenance, which is convenient for inspection and maintenance.

[0024] like Figure 1 As shown, as another preferred embodiment of the present invention, a steam collector 14 is installed at a position of the wire body close to the electrode feed port 1, and the outlet end of the steam collector 14 is connected to the dehumidifier 3 for collecting and processing the steam generated by the hot water tank 4.

[0025] like Figure 3 As shown, as another preferred embodiment of the present invention, a feed trough 9 is installed at the position of the line body corresponding to the spray dehydration section conveyor belt 6, and the feed trough 9 is used to collect the fallen powder. A discharge auger 10 is installed at the bottom end of the feed trough 9.

[0026] In the embodiment of the present invention, the powder that is released by the combined action of the spray head 7 and the air knife 8 falls into the collecting trough 9 for collection, and can eventually be sent out through the discharging auger 10 .

[0027] like Figure 3As shown, as another preferred embodiment of the present invention, the spray heads 7 and air knives 8 are alternately arranged at the front section of the spray dehydration section conveyor belt 6, and only the air knives 8 are arranged at the rear section of the spray dehydration section conveyor belt 6.

[0028] In actual application of the embodiment of the present invention, the purpose of alternatingly arranging the front-end spray head 7 and the air knife 8 is to make the powder more likely to crack and thus more easily separate under the alternating action of wind or water power, in conjunction with the front-end infiltration process. In the rear section of the conveyor belt 6 in the spray dehydration section, only the air knife 8 is arranged, and the characteristics of the air knife can be utilized in the aforementioned cracks to further achieve powder removal at the remaining positions.

[0029] like Figure 1 As shown, as another preferred embodiment of the present invention, a spray water inlet pipe and a spray water outlet pipe are installed at the position of the line body corresponding to the spray dehydration section conveyor belt 6, the spray water inlet pipe is connected to the spray head 7, and the spray water outlet pipe is connected to the bottom of the aggregate trough 9.

[0030] When the embodiment of the present invention is actually used, the spray water will fall into the collecting trough 9 together with the moving powder. When the material needs to be discharged, the internal moisture is first removed through the spray outlet pipe, and then the powder is discharged through the discharge auger 10.

[0031] The embodiments of the present invention achieve efficient and non-destructive battery powder removal through technologies such as electrode infiltration treatment and water / wind separation and stripping, overcome the limitations of traditional technologies, and provide a new and competitive technical solution for the battery recycling industry.

[0032] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lithium battery positive and negative electrode sheet de-powdering line, characterized in that: It comprises an impregnation section conveyor belt (5) and a spray dehydration section conveyor belt (6) arranged and connected according to the material movement path, wherein the impregnation section conveyor belt (5) is installed in a hot water tank (4) for impregnating the electrode, and a spray head (7) and an air knife (8) are installed on the spray dehydration section conveyor belt (6) for repeatedly spraying and removing powder from the impregnated electrode, and the electrode feed port (1) and the aluminum foil discharge port (2) are respectively provided at the inlet of the impregnation section conveyor belt (5) and the outlet of the spray dehydration section conveyor belt (6) of the line body; A collecting trough (9) is installed at a position of the line body corresponding to the spraying and dehydration section conveyor belt (6), and the collecting trough (9) is used to collect the fallen powder. A discharging auger (10) is installed at the bottom end of the collecting trough (9); At the front section of the spraying and dehydrating section conveyor belt (6), the spray heads (7) and the air knives (8) are arranged alternately, and at the rear section of the spraying and dehydrating section conveyor belt (6), only the air knives (8) are arranged; A spray water inlet pipe and a spray water outlet pipe are installed at the position of the line body corresponding to the spray dehydration section conveyor belt (6), the spray water inlet pipe is connected to the spray head (7), and the spray water outlet pipe is connected to the bottom of the aggregate trough (9); The spray water will fall into the aggregate trough (9) together with the powder. When the material needs to be discharged, the internal water is first removed through the spray outlet pipe, and then the powder is discharged through the discharge auger (10).

2. The lithium battery positive and negative electrode sheet de-powdering line according to claim 1, characterized in that: The hot water tank (4) is connected to a water outlet pipe (11), a sewage pipe (12) and a hot water supply pipe (13). The hot water supply pipe (13) and the water outlet pipe (11) are used to keep the temperature in the hot water tank (4) constant.

3. The lithium battery positive and negative electrode sheet de-powdering line according to claim 2, characterized in that: A steam collector (14) is installed at a position of the wire body close to the electrode feed port (1), and the outlet end of the steam collector (14) is connected to the dehumidifier (3) for collecting and processing steam generated by the hot water tank (4).

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