Lower separation device for pole piece separation

Abstract

The utility model discloses a lower separation device for pole piece separation, which is arranged on a negative electrode bin and comprises a back side isolation pressing piece arranged on the side wall of the negative electrode bin in a sliding mode, a diaphragm starting back blowing piece is arranged on the inner side of the negative electrode bin, and one side, far away from the back side isolation pressing piece, of the diaphragm starting back blowing piece is connected with a lower end rear stripping piece. A negative electrode stripping part is arranged on the outer side of the negative electrode bin, and after the diaphragm starting head is blown out by the diaphragm starting head back-blowing part, the negative electrode stripping part is blown into a gap between the negative electrode and the diaphragm to separate the negative electrode from the diaphragm, a complicated structure and pretreatment do not need to be independently arranged, and the separation efficiency is higher while the separation steps are simplified.

Description

Technical Field

[0001] This utility model relates to a battery disassembly device, and more particularly to a lower separation device for electrode separation. Background Technology

[0002] Refined dismantling of individual battery cells is a key technology for achieving efficient recycling and resource reuse of waste batteries. Its core objective is to safely and environmentally extract valuable materials from batteries, such as positive and negative electrode materials, electrolytes, and separators. During the dismantling process, pretreatment is required to ensure the safety and operability of the dismantling. Then, the outer casing is cut by mechanical cutting to separate the outer casing from the core. The positive and negative electrode sheets and separators in the core pack are then efficiently separated. The separated electrode sheets are then further separated into active materials and current collectors for recycling and purification. During the electrode separation process, the beginning of the separator in some core packs may cover the negative electrode, preventing it from being blown out by the air knife and forcing it to act on the separator.

[0003] In existing technologies, electrode separation is often achieved by manually lifting the diaphragm of the electrode so that an air knife can blow out the negative electrode, or by cutting off the front end of the electrode and directly removing the diaphragm to expose the negative electrode. While this achieves the goal of blowing out the negative electrode, it requires a separate lifting structure at the front end of the entire electrode separation process. This not only requires a separate processing step but also wastes some electrode material, which can easily affect the separation efficiency.

[0004] Therefore, this invention aims to provide a lower separation device for electrode separation, which can blow open the starting position of the diaphragm before blowing out the negative electrode, and the two steps are basically completed at the same time. There is no need to set up a complex structure and pretreatment separately, which simplifies the separation steps and improves the separation efficiency. Utility Model Content

[0005] This invention provides a lower separation device for electrode separation, which can effectively solve the above-mentioned problems.

[0006] This utility model is implemented as follows:

[0007] A lower separation device for electrode separation, disposed on a negative electrode chamber, includes: a back-side isolation pressure member slidably disposed on the side wall of the negative electrode chamber; a diaphragm initiation backflush member disposed on the inner side of the negative electrode chamber; a lower end peeling member connected to the side of the diaphragm initiation backflush member away from the back-side isolation pressure member; and a negative electrode peeling member disposed on the outer side of the negative electrode chamber. After the diaphragm initiation backflush member blows out the diaphragm initiation, the negative electrode peeling member blows into the gap between the negative electrode and the diaphragm, thus separating the negative electrode from the diaphragm.

[0008] As a further improvement, a negative electrode compartment guide rail is provided on the outside of the negative electrode compartment, and the back-side isolation pressure member includes a back-side isolation sliding plate connected to the negative electrode compartment guide rail. The back-side isolation sliding plate is connected to a back-side isolation moving frame. The back-side isolation moving frame has an L-shaped structure. A back-side isolation guide roller is installed on one end of the short shaft of the back-side isolation moving frame, and a back-side isolation moving frame drive member is connected to one end of the long shaft of the back-side isolation moving frame.

[0009] As a further improvement, the diaphragm initiator backflush component includes a diaphragm initiator backflush frame locked to the inner wall of the negative electrode compartment, a diaphragm initiator directional frame locked onto the diaphragm initiator backflush frame, and a diaphragm initiator air knife movably mounted on the diaphragm initiator directional frame.

[0010] As a further improvement, the lower rear stripper includes a connection to at least one rear stripper mounting rod, on which a rear stripper air knife is mounted.

[0011] As a further improvement, the rear peeling mounting rod is mounted on the rear peeling push rod, which is mounted inside the negative electrode compartment.

[0012] As a further improvement, the negative electrode stripping component includes an external frame for the negative electrode compartment located outside the negative electrode compartment. The external frame for the negative electrode compartment has an air knife receiving groove, and a negative electrode stripping air knife is disposed in the air knife receiving groove.

[0013] As a further improvement, the negative electrode stripping air knife is hinged in the air knife receiving groove, and several negative electrode air knife push rods are installed at the bottom of the negative electrode compartment external frame, with the output end of the negative electrode air knife push rod connected to the bottom of the negative electrode stripping air knife.

[0014] The beneficial effects of this utility model are:

[0015] In some existing core packages, the diaphragm tip can obscure the negative electrode, making it difficult to blow out. This necessitates separate pretreatment of the core package, which is quite troublesome. Therefore, this invention first uses a diaphragm tip back-blowing component to blow up the diaphragm tip, exposing the negative electrode. Then, a negative electrode stripping component immediately blows the negative electrode backward, causing it to fall into the negative electrode chamber. The back-side isolation pressure component then abuts against the bottom of the diaphragm, blocking the negative electrode. This allows the negative electrode to be completely separated from the diaphragm and positive electrode, resulting in a smoother recovery process and higher separation efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model 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.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model in conjunction with the electrode separation mechanism.

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 3 This is a front view structural diagram of this utility model.

[0020] Figure 4 This is a top view of the structure of this utility model.

[0021] In the picture:

[0022] Negative electrode compartment 80, negative electrode compartment guide rail 801, back side isolation pressure component 81, back side isolation sliding plate 811, back side isolation moving frame 812, back side isolation guide roller 813, side isolation frame drive component 814, diaphragm initiation back-blowing component 82, diaphragm initiation back-blowing frame 821, diaphragm initiation orientation frame 822, diaphragm initiation air knife 823, lower end rear peeling component 83, rear peeling mounting rod 831, rear peeling air knife 832, rear peeling push rod 833, negative electrode peeling component 84, negative electrode compartment external frame 841, air knife receiving groove 842, negative electrode peeling air knife 843, negative electrode air knife push rod 844. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model 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 utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] Reference Figures 1-4 As shown, a lower separation device for electrode separation is installed on a negative electrode chamber 80, including: a back-side isolation pressure member 81 slidably disposed on the side wall of the negative electrode chamber 80; a diaphragm initiation backflush member 82 disposed on the inner side of the negative electrode chamber 80; a lower end peeling member 83 connected to the side of the diaphragm initiation backflush member 82 away from the back-side isolation pressure member 81; and a negative electrode peeling member 84 disposed on the outer side of the negative electrode chamber 80. After the diaphragm initiation backflush member 82 blows out the diaphragm initiation, the negative electrode peeling member 84 blows into the gap between the negative electrode and the diaphragm and separates the negative electrode from the diaphragm.

[0026] In some existing core packages, the diaphragm tip can cover the negative electrode, making it difficult to blow out. This necessitates separate pretreatment of the core package, which is quite troublesome. Therefore, this invention first uses a diaphragm tip back-blowing component 82 to blow up the diaphragm tip, exposing the negative electrode. Then, the negative electrode stripping component 84 immediately blows the negative electrode backward, causing it to fall into the negative electrode chamber 80. The back-side isolation pressure component 81 then abuts against the bottom of the diaphragm, blocking the negative electrode. This allows the negative electrode to be completely separated from the diaphragm and positive electrode, resulting in a smoother recovery process and higher separation efficiency.

[0027] In some existing core packages, the diaphragm tip can cover the negative electrode, making it difficult to blow out. This necessitates separate pretreatment of the core package, which is quite troublesome. Therefore, this invention first uses a diaphragm tip back-blowing component 82 to blow up the diaphragm tip, exposing the negative electrode. Then, the negative electrode stripping component 84 immediately blows the negative electrode backward, causing it to fall into the negative electrode chamber 80. The back-side isolation pressure component 81 then abuts against the bottom of the diaphragm, blocking the negative electrode. This allows the negative electrode to be completely separated from the diaphragm and positive electrode, resulting in a smoother recovery process and higher separation efficiency.

[0028] After the negative electrode is blown out, in order to prevent the negative electrode from being carried further back during the output process of the positive electrode and the diaphragm, a negative electrode compartment guide rail 801 is provided on the outside of the negative electrode compartment 80 in this embodiment. The back-side isolation pressure member 81 includes a back-side isolation sliding plate 811 connected to the negative electrode compartment guide rail 801. The back-side isolation sliding plate 811 is connected to a back-side isolation moving frame 812. The back-side isolation moving frame 812 has an L-shaped structure. A back-side isolation guide roller 813 is installed on one end of the short shaft of the back-side isolation moving frame 812. A back-side isolation frame drive member 814 is connected to one end of the long shaft of the back-side isolation moving frame 812. In the initial stage, the back-side isolation sliding plate 811 can slide down to make way for other structures. After the negative electrode is separated, the back-side isolation sliding plate 811 can rise to intercept the negative electrode.

[0029] When starting the diaphragm, the diaphragm starting backflush component 82 is positioned opposite to the negative electrode stripping component 84. Specifically, the diaphragm starting backflush component 82 includes a diaphragm starting backflush frame 821 locked to the inner wall of the negative electrode chamber 80. A diaphragm starting adjustment frame 822 is locked on the diaphragm starting backflush frame 821, and a diaphragm starting air knife 823 is movably installed on the diaphragm starting adjustment frame 822. Thus, the diaphragm can be started by blowing in the opposite direction.

[0030] After the membrane is blown up, the boundary between the negative electrode, the membrane, and the positive electrode becomes more obvious. At this time, the negative electrode stripping component 84 can be used directly to act on the negative electrode. Specifically, the negative electrode stripping component 84 includes a negative electrode compartment external frame 841 disposed outside the negative electrode compartment 80. The negative electrode compartment external frame 841 is provided with an air knife receiving groove 842, and a negative electrode stripping air knife 843 is disposed in the air knife receiving groove. The negative electrode can be blown up by the negative electrode stripping air knife 843.

[0031] Since the feeding angle of different core packages may vary, the boundary position between the negative electrode and the diaphragm may also vary. Therefore, in this embodiment, the negative electrode stripping air knife 843 is hinged in the air knife receiving groove 842. Several negative electrode air knife push rods 844 are installed at the bottom of the negative electrode chamber external frame 841. The output end of the negative electrode air knife push rod 844 is connected to the bottom of the negative electrode stripping air knife 843, so that the position of the negative electrode stripping air knife 843 can be adjusted to adapt to different types of core packages.

[0032] In the later stage of core-packet separation, the negative electrode needs to be completely separated from the positive electrode and the separator. Otherwise, some of the tail of the negative electrode may be carried to the front end. Therefore, the lower end post-stripping member 83 of this embodiment includes at least one post-stripping mounting rod 831. A post-stripping air knife 832 is installed on the post-stripping mounting rod 831. The tapered post-stripping air knife 832 can generate blowing force and provide a certain amount of pressure resistance, so that the separation effect of the end negative electrode is better. In order to improve the adaptability of the post-stripping air knife 832, the post-stripping mounting rod (831) is installed on the post-stripping push rod (833). The post-stripping push rod (833) is installed on the inner side of the negative electrode compartment (80), so that the position of the post-stripping air knife 832 can be adjusted.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lower separation device for electrode separation, characterized in that, The device is installed on the negative electrode compartment (80) and includes: a back-side isolation pressure member (81) slidably disposed on the side wall of the negative electrode compartment (80); a diaphragm starter backflush member (82) is disposed on the inner side of the negative electrode compartment (80); a lower end peeling member (83) is connected to the side of the diaphragm starter backflush member (82) away from the back-side isolation pressure member (81); and a negative electrode peeling member (84) is disposed on the outer side of the negative electrode compartment (80). After the diaphragm starter backflush member (82) blows out the diaphragm starter, the negative electrode peeling member (84) blows into the gap between the negative electrode and the diaphragm and separates the negative electrode from the diaphragm.

2. The lower separation device for electrode separation according to claim 1, characterized in that, The negative electrode compartment (80) is provided with a negative electrode compartment guide rail (801) on its outer side. The back side isolation pressure member (81) includes a back side isolation sliding plate (811) connected to the negative electrode compartment guide rail (801). The back side isolation sliding plate (811) is connected to a back side isolation moving frame (812). The back side isolation moving frame (812) has an L-shaped structure. A back side isolation guide roller (813) is installed on one end of the short shaft of the back side isolation moving frame (812). A back side isolation moving frame drive member (814) is connected to one end of the long shaft of the back side isolation moving frame (812).

3. The lower separation device for electrode separation according to claim 1, characterized in that, The diaphragm initiator backflush unit (82) includes a diaphragm initiator backflush frame (821) locked to the inner wall of the negative electrode chamber (80), a diaphragm initiator directional frame (822) locked on the diaphragm initiator backflush frame (821), and a diaphragm initiator air knife (823) movably installed on the diaphragm initiator directional frame (822).

4. The lower separation device for electrode separation according to claim 1, characterized in that, The lower end rear stripper (83) includes at least one rear stripper mounting rod (831) connected to the rear stripper mounting rod (831), on which a rear stripper air knife (832) is mounted.

5. The lower separation device for electrode separation according to claim 4, characterized in that, The rear peeling mounting rod (831) is mounted on the rear peeling push rod (833), which is installed on the inside of the negative electrode compartment (80).

6. The lower separation device for electrode separation according to claim 1, characterized in that, The negative electrode stripping component (84) includes a negative electrode compartment external frame (841) disposed outside the negative electrode compartment (80), and an air knife receiving groove (842) is provided on the negative electrode compartment external frame (841), and a negative electrode stripping air knife (843) is disposed in the air knife receiving groove.

7. The lower separation device for electrode separation according to claim 6, characterized in that, The negative electrode stripping air knife (843) is hinged in the air knife receiving groove (842), and a number of negative electrode air knife push rods (844) are installed at the bottom of the negative electrode chamber external frame (841). The output end of the negative electrode air knife push rod (844) is connected to the bottom of the negative electrode stripping air knife (843).

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