Separating device for battery pole piece and diaphragm

Abstract

The utility model relates to the technical field of pole piece separation and recovery, particularly provides a separation device for a battery pole piece and a diaphragm, and aims to solve the problem that the pole piece and the diaphragm cannot be effectively separated in the conventional separation mode of the battery core pole piece. In order to achieve the purpose, the separation device for the battery pole piece and the diaphragm comprises a roller assembly and a separation part, the roller assembly is used for carrying out at least one time of bending and at least one time of reverse bending on a pole piece on a diaphragm in the process of pulling the diaphragm, so that the pole piece is separated from the diaphragm for the first time; and the separation part is used for carrying out secondary separation on the pole piece and the diaphragm which are separated for the first time. According to the utility model, effective separation of the pole piece and the diaphragm can be realized by utilizing a retroflexure principle.

Description

Technical Field

[0001] The utility model relates to the technical field of pole piece separation and recovery, and specifically provides a device for separating a battery pole piece and a diaphragm. Background Art

[0002] The battery cell includes a separator, a positive electrode, a negative electrode and an electrolyte. When separating and recycling, the battery separator and the positive and negative electrodes need to be separated and disassembled, and then the separator and the positive and negative electrodes need to be recycled separately.

[0003] At present, the decomposition and recycling of battery cells generally adopts the method of directly crushing the entire battery. This separation method is less effective and has the disadvantage of being unable to effectively separate the electrode and the diaphragm.

[0004] In view of the problems existing in the above-mentioned prior art, those skilled in the art are in urgent need of a device for separating a battery pole piece and a diaphragm so as to effectively separate the pole piece and the diaphragm. Utility Model Content

[0005] The utility model aims to solve the above technical problem, that is, to solve the problem that the existing separation method of the pole pieces of the battery cell cannot effectively separate the pole pieces and the diaphragm.

[0006] In a first aspect, the utility model provides a device for separating a battery pole piece from a diaphragm, comprising a roller assembly and a separation component; the roller assembly is used to bend the pole piece on the diaphragm at least once and reversely bend the pole piece at least once during the process of pulling the diaphragm, so that the pole piece is initially separated from the diaphragm; the separation component is used to perform a second separation on the initially separated pole piece and diaphragm.

[0007] In the case of adopting the above-mentioned technical scheme, the utility model adopts the principle of reverse bending, and bends and reverses the pole piece through the roller assembly during the process of pulling the diaphragm, so that the pole piece is lifted up under the action of the reverse bending stress, and the pole piece and the diaphragm are initially separated, and then the initially separated pole piece and diaphragm are completely separated by the separation component. Therefore, the utility model can effectively separate the pole piece and the diaphragm by using the principle of reverse bending, thereby improving the success rate of separation of the pole piece and the diaphragm.

[0008] Furthermore, the separation component is an air knife, and the air knife is used to perform a second separation on the initially separated pole piece and the diaphragm by using a blowing airflow.

[0009] Furthermore, the roller assembly includes a curved roller assembly and a reverse curved roller assembly; the curved roller assembly is used to bend the pole piece; and the reverse curved roller assembly is used to reversely bend the pole piece.

[0010] Furthermore, the roller assembly includes the curved roller, a first reverse curved roller assembly and a second reverse curved roller assembly which are sequentially arranged along the traction path; the curved roller is used to bend the pole piece, the first reverse curved roller assembly is used to reversely bend the pole piece passing through the curved roller, and the second reverse curved roller assembly is used to reversely bend the pole piece passing through the first reverse curved roller assembly.

[0011] Furthermore, the roller assembly also includes a tension roller; the tension roller is arranged on the traction path between the first inverse curved roller assembly and the second inverse curved roller assembly, and the tension roller is used to adjust the tensioning force of the diaphragm between the first inverse curved roller assembly and the second inverse curved roller assembly.

[0012] Furthermore, the reverse bending roller assembly includes a reverse bending roller and a rubber roller; the reverse bending roller and the rubber roller are arranged on two sides of the diaphragm relatively, and the reverse bending roller is used to reversely bend the pole piece on the diaphragm.

[0013] Furthermore, the reverse curved roller assembly also includes a first drive device and a second drive device; the first drive device is connected to the rubber roller for adjusting the pressure between the rubber roller and the reverse curved roller; the second drive device is connected to the reverse curved roller for driving the reverse curved roller to rotate.

[0014] In the case of adopting the above technical solution, the reverse curved roller and the rubber roller of the utility model are pressed tightly, and the pressure between the reverse curved roller and the rubber roller is adjusted to clamp the diaphragm therebetween or to clamp the diaphragm and the pole piece on the diaphragm.

[0015] Furthermore, the wind knife includes a guide portion, which is gradually bent or inclined from an end away from the diaphragm to an end close to the diaphragm, and the end of the guide portion close to the diaphragm is a blowing outlet; the blowing outlet is used to use the blowing airflow to perform a second separation on the pole piece and the diaphragm that are initially separated, and the guide portion is used to guide the pole piece.

[0016] Furthermore, the cross-sectional area of ​​the guide portion gradually decreases from a direction away from the diaphragm to a direction close to the diaphragm; and / or an air flow channel connected to the blowing outlet is formed inside the guide portion, and the cross-sectional area of ​​the air flow channel gradually decreases from a direction away from the diaphragm to a direction close to the diaphragm.

[0017] Furthermore, it also includes a traction mechanism arranged at the end of the traction path; the traction mechanism includes a clamping mechanism and a third driving device, the clamping mechanism is used to clamp one end of the diaphragm, and the third driving device is transmission-connected to the clamping mechanism to drive the clamping mechanism to rotate.

[0018] When the above technical solution is adopted, the beneficial effects of the utility model are:

[0019] (1) The utility model utilizes the reverse bending principle to achieve the initial separation of the electrode piece and the diaphragm; specifically, after the electrode piece has been bent at least once and reversely bent at least once, the edge of the electrode piece is lifted up under the action of the reverse bending stress, so that the electrode piece and the diaphragm are peeled off to achieve the initial separation, so as to facilitate the subsequent complete separation of the electrode piece and the diaphragm; the utility model utilizes the reverse bending principle to effectively separate the electrode piece and the diaphragm, thereby improving the success rate of separation.

[0020] (2) The utility model utilizes a high-speed airflow through a wind knife to completely separate the initially separated electrode piece from the diaphragm. The initially separated electrode piece is completely separated from the diaphragm under the action of the high-speed airflow of the wind knife and gradually moves away from the diaphragm along the bending or inclined path of the guide portion, thereby achieving the effect of effectively separating the electrode piece from the diaphragm.

[0021] (3) The pole piece on one side of the diaphragm of the utility model is initially separated from the diaphragm after passing through the curved roller and the first reverse curved roller assembly, and the pole piece on the other side of the diaphragm is initially separated from the diaphragm after passing through the curved roller, the first reverse curved roller and the second reverse curved roller, so that the utility model can separate the positive and negative pole pieces on both sides of the diaphragm respectively; and, by adjusting the position and / or diameter of the curved roller and the reverse curved roller, the wrap angle of the diaphragm is adjusted to adjust the bending degree and reverse bending degree of the pole piece, and adjust the degree of tilting of the edge of the pole piece relative to the diaphragm, so as to achieve the initial separation of the pole piece and the diaphragm.

[0022] (4) The reverse curved roller and the rubber roller of the utility model are arranged relative to each other, the reverse curved roller is the active roller, and the rubber roller is the driven roller, and the two can cooperate to clamp the traction diaphragm or clamp the traction diaphragm and the pole piece thereon; and a tension roller is arranged on the traction path between the first reverse curved roller assembly and the second reverse curved roller assembly. When the first reverse curved roller assembly and the second reverse curved roller assembly clamp the traction diaphragm, the tension roller controls the tensioning force of the diaphragm between the first reverse curved roller assembly and the second reverse curved roller assembly to ensure that the diaphragm is taut, so that the edge of the pole piece on the diaphragm is easily lifted up due to the reverse curved tension, thereby improving the effect of separating the pole piece from the diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0024] Figure 1 This is a front view of the separation device for the battery pole piece and the diaphragm of the utility model;

[0025] Figure 2 It is a three-dimensional structural schematic diagram of the separation device of the battery pole piece and the diaphragm of the utility model;

[0026] Figure 3It is a partial schematic diagram of the separation device of the battery pole piece and the diaphragm of the utility model.

[0027] Reference numerals list :

[0028] 1-battery loading box; 2-diaphragm; 3-pole piece; 4-first roller; 5-bending roller; 6-reverse bending roller; 7-rubber roller; 8-wind knife; 9-pole piece collecting box; 10-tension roller; 11-traction mechanism; 12-second roller; 81-guide part; 82-blowing outlet; 83-air inlet; 100-first traction path; 111-gripping mechanism; 112-third driving device; 200-second traction path; 300-third traction path. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0032] The device for separating battery pole pieces and diaphragms of the utility model is suitable for separating and recovering pole pieces of stacked batteries and wound batteries. This embodiment is described by taking the separation and recovery of pole pieces of stacked batteries as an example. The principle of separating and recovering pole pieces of wound batteries is the same as that of stacked batteries.

[0033] like Figures 1 to 3 As shown, the embodiment of the utility model discloses a separation device for a battery pole piece and a diaphragm, comprising a battery loading box 1, a roller assembly, a separation component, a pole piece collection box 9 and a traction mechanism 11; wherein the roller assembly comprises a plurality of roller bodies arranged along a traction path;

[0034] An unseparated diaphragm 2 and pole pieces 3 on both sides thereof are placed in a battery loading box 1, and a plurality of rollers are provided between the battery loading box 1 and a traction mechanism 11; the diaphragm 2 passes through the plurality of rollers in sequence from the battery loading box 1 to the traction mechanism 11 to form a traction path; in the process of the diaphragm 2 moving along the traction path, the plurality of rollers bend the pole piece 3 on the diaphragm 2 at least once and reversely bend the pole piece 3 at least once, and under the action of the reverse bending stress, the edge of the pole piece 3 is lifted relative to the surface of the diaphragm 2 to achieve initial separation; then the separation component continues to completely separate the initially separated pole piece 3 from the diaphragm 2.

[0035] The utility model utilizes the inverse bending principle to initially separate the pole piece 3 from the diaphragm 2, which facilitates the subsequent complete separation of the pole piece 3 from the diaphragm 2, that is, the inverse bending principle can achieve the effect of effectively separating the pole piece 3 from the diaphragm 2, thereby improving the success rate of separation; the edge warping of the pole piece 3 refers to the edge of the joint portion of the pole piece 3 and the diaphragm 2 being warped relative to the surface of the diaphragm 2.

[0036] The multiple roller bodies of the roller assembly of the utility model bend or reverse bend the pole piece 3 on the diaphragm 2. It should be understood that the diaphragm 2 covers a part of the roller body, that is, the diaphragm 2 and the roller body form a wrap angle, so that the pole piece 3 on the diaphragm 2 will bend when passing through the roller body, and the diaphragm 2 covers the roller body in different directions of counterclockwise or clockwise, and the corresponding bending directions of the pole piece 3 are different, that is, the pole piece 3 is bent or reversed.

[0037] In addition, the traction path setting of the utility model needs to take into account the bending degree of the multiple rollers on the pole piece 3, that is, by adjusting the positions of the multiple rollers, the wrap angle between the rollers and the diaphragm 2 is adjusted accordingly to adjust the bending or reverse bending degree of the pole piece 3, so as to achieve the effect of adjusting the tilting degree of the pole piece 3; and the wrap angle of the diaphragm 2 can also be adjusted by adjusting the diameters of the multiple rollers, thereby changing the bending or reverse bending degree of the pole piece 3, so as to achieve the effect of adjusting the tilting degree of the pole piece 3.

[0038] As a preferred embodiment of the utility model, the separation component adopts an air knife 8, and the air knife 8 uses a blowing airflow to perform a secondary separation on the initially separated pole piece 3 and the diaphragm 2;

[0039] It should be noted that, those skilled in the art may also use other separation components to perform a secondary separation on the initially separated pole piece 3 and diaphragm 2. For example, after the pole piece 3 is lifted up under the action of the inverse bending stress, a baffle or scraper structure may be used to perform a secondary separation on the initially separated pole piece 3 and diaphragm 2, that is, the lifted part of the pole piece 3 is blocked by the baffle or scraper, and as the traction process proceeds, the pole piece 3 and diaphragm 2 are completely separated.

[0040] As a preferred embodiment of the utility model, the roller assembly includes a curved roller assembly and a reverse curved roller assembly, wherein the curved roller assembly is used to bend the pole piece 3 on the diaphragm 2, and the reverse curved roller assembly is used to reversely bend the pole piece 3 on the diaphragm 2;

[0041] like Figure 1 and Figure 2 As shown, the roller assembly of the embodiment of the utility model includes a curved roller 5, a first reverse curved roller assembly and a second reverse curved roller assembly, and the first reverse curved roller assembly and the second reverse curved roller assembly both include a reverse curved roller 6 and a rubber roller 7; preferably, the rubber roller 7 is made of rubber;

[0042] The pole piece 3 on one side of the diaphragm 2 is initially separated from the diaphragm 2 after passing through the curved roller 5 and the first inverse curved roller assembly in sequence, and the pole piece 3 on the other side of the diaphragm 2 is initially separated from the diaphragm 2 after passing through the curved roller 5, the first inverse curved roller assembly and the second inverse curved roller assembly in sequence;

[0043] Continue reading Figure 1 , the first pole piece on the left side of the diaphragm 2 is bent by the curved roller 5 and reversely bent by the first reverse curved roller assembly in sequence, so that the edge of the first pole piece is tilted and separated from the diaphragm 2 for the first time; the second pole piece on the right side of the diaphragm 2 passes through the curved roller 5, the first reverse curved roller assembly and the second reverse curved roller assembly in sequence, the second pole piece is bent when passing through the curved roller 5, and then reversely bent in direct contact with the reverse curved roller 6 of the first reverse curved roller assembly when passing through the first reverse curved roller assembly, and then reversely bent again under the action of the reverse curved roller 6 of the second reverse curved roller assembly when passing through the second reverse curved roller assembly, so that the edge of the second pole piece is tilted and separated from the diaphragm 2 for the first time.

[0044] It should be noted that those skilled in the art can specifically set the number of curved roller assemblies and reverse curved roller assemblies, and those skilled in the art can specifically set the order of separating the pole pieces 3 on both sides of the diaphragm 2. The present utility model does not make any specific limitation, as long as it can achieve the effect of initially separating the pole pieces 3 on both sides of the diaphragm 2 from the diaphragm 2 under the action of reverse bending stress.

[0045] As a preferred embodiment of the present invention, Figure 1 and Figure 2 As shown, the reverse curved roller 6 and the rubber roller 7 are arranged on both sides of the diaphragm 2, wherein the reverse curved roller 6 is an active roller and the rubber roller 7 is a driven roller. The reverse curved roller 6 and the rubber roller 7 can be pressed tightly and rotate in opposite directions to clamp and pull the passing diaphragm 2 or the diaphragm 2 and the pole piece 3 thereon;

[0046] See also Figure 1As shown, the path from the battery loading box 1 to the first inverse curved roller assembly is the first traction path 100 and traction is performed through the first inverse curved roller assembly; the path from the first inverse curved roller assembly to the second inverse curved roller assembly is the second traction path 200 and traction is performed through the second inverse curved roller assembly; the path from the second inverse curved roller assembly to the traction mechanism 11 is the third traction path 300 and traction is performed through the traction mechanism 11.

[0047] As a preferred embodiment of the present invention, the first inverse curved roller assembly and the second inverse curved roller assembly both further include a first driving device and a second driving device; Figure 1 As shown, the rubber roller 7 is located above the reverse curved roller 6, and the first driving device is connected to the rubber roller 7 to drive the rubber roller 7 to move up and down, and the pressure between the rubber roller 7 and the reverse curved roller 6 is adjusted so that the rubber roller 7 and the reverse curved roller 6 can clamp the diaphragm 2 or clamp the diaphragm 2 and the pole piece 3 thereon; the second driving device is connected to the reverse curved roller 6 to drive the reverse curved roller 6 to rotate, and when the rubber roller 7 and the reverse curved roller 6 are pressed tightly, the reverse curved roller 6 and the rubber roller 7 rotate in opposite directions to pull the diaphragm 2 or pull the diaphragm 2 and the pole piece 3 thereon.

[0048] In a specific embodiment, the first driving device is a driving cylinder, and the second driving device is a driving motor.

[0049] It should be noted that those skilled in the art can specifically set the driving structure and driving mode of the reverse curved roller assembly. For example, both the first driving device and the second driving device can be transmission-connected to the reverse curved roller 6; that is, as long as the reverse curved roller 6 and the rubber roller 7 can cooperate to clamp the traction diaphragm 2 or clamp the traction diaphragm 2 and the pole piece 3 thereon, it will be sufficient.

[0050] As a preferred embodiment of the present invention, Figure 1 and Figure 2 As shown, the roller assembly further includes a tension roller 10, which is arranged on the traction path between the first inverse curved roller assembly and the second inverse curved roller assembly; that is, the tension roller 10 is arranged Figure 1 On the second traction path 200 in.

[0051] In the case where the first inverse curved roller assembly and the second inverse curved roller assembly can clamp the traction diaphragm 2 or clamp the traction diaphragm 2 and the pole piece 3 thereon, the tension roller 10 can adjust the tension of the diaphragm 2 on the second traction path 200; continue to refer to Figure 1 Since the pole pieces 3 on both sides of the diaphragm 2 are initially separated on the second traction path 200, the diaphragm 2 is kept in a taut state by controlling the tension of the diaphragm 2, so that the pole pieces 3 on the diaphragm 2 are easily lifted up due to the inverse bending tension, that is, the initial separation of the edge of the pole piece 3 and the diaphragm 2 is achieved.

[0052] In a specific embodiment, a tension sensor is provided on the tension roller 10 to detect the tension of the diaphragm 2 and perform active adjustment; it is understandable that the tension of the diaphragm 2 should be large enough to cause the pole piece 3 to bend and warp and ensure that the diaphragm 2 will not break.

[0053] As a preferred embodiment of the present invention, Figure 1 As shown, the roller assembly also includes a first roller 4 and a second roller 12. The unseparated diaphragm 2 and the pole pieces 3 on both sides in the battery loading box 1 pass through the first roller 4 in the vertical upward direction, and then the traction direction is adjusted. The traction is continued in the direction inclined toward the upper right and passes through the curved roller 5 and the first reverse curved roller assembly in sequence; the traction direction is adjusted when passing through the first reverse curved roller assembly, and the traction is continued in the direction inclined toward the lower left and passes through the second reverse curved roller assembly. The traction direction is adjusted when passing through the second reverse curved roller assembly, and the traction is continued in the horizontal direction after passing through the second roller 12 to the winding traction assembly 11 for winding traction.

[0054] It should be noted that the rollers of the present invention play the role of adjusting the traction direction and supporting. Those skilled in the art can specifically set the number and position of the rollers, and the present invention does not make specific limitations; and those skilled in the art can specifically set the traction direction of each traction path, as long as the effect of bending and reverse bending the pole piece 3 can be achieved, and the present invention does not make specific limitations.

[0055] As a preferred embodiment of the present invention, Figure 3 As shown, the wind knife 8 and the inverted roller 6 are arranged opposite to each other on both sides of the diaphragm 2; preferably, the wind knife 8 and the part of the inverted roller 6 covering the diaphragm 2 are arranged opposite to each other, so that under the support of the inverted roller 6, the wind knife 8 uses the blowing airflow to perform secondary separation on the initially separated pole piece 3 and the diaphragm 2;

[0056] It should be noted that those skilled in the art can specifically set the position of the wind knife 8 along the traction path, as long as the wind knife 8 can achieve the effect of completely separating the initially separated pole piece 3 from the diaphragm 2, and the utility model does not make any specific limitation.

[0057] Continue reading Figure 3 The wind knife 8 is provided with a guide portion 81, and the guide portion 81 is bent or inclined from an end away from the diaphragm 2 to an end close to the diaphragm 2 in a direction opposite to the pulling direction, and the end of the guide portion 81 close to the diaphragm 2 is a blowing outlet 82; in the process of pulling the diaphragm 2, the blowing outlet 82 blows air to the junction of the pole piece 3 and the diaphragm 2, and the pole piece 3 gradually moves away from the diaphragm 2 along the curved or inclined path of the guide portion 81 from the front end to the rear end in the pulling direction;

[0058] An air inlet 83 is provided at one end of the air knife 8 away from the diaphragm 2, and the air inlet 83 is connected to the air outlet 82 and allows gas to pass through; preferably, the gas passed through is compressed air;

[0059] In a specific embodiment, a pressure regulating valve and a throttle valve are provided on the air path of the wind knife 8 to adjust the incoming air pressure, flow rate and air volume, so that the pole piece 3 and the diaphragm 2 are separated under the action of the high-speed airflow and the diaphragm 2 is ensured to be unbroken.

[0060] In the embodiment of the utility model, two wind knives 8 are provided, and are respectively arranged opposite to the reverse curved roller 6 of the first reverse curved roller assembly and the reverse curved roller 6 of the second reverse curved roller assembly;

[0061] like Figure 1 As shown, the pole piece 3 on one side of the diaphragm 2 is initially separated under the inflection of the inflection roller 6 after passing through the matching position of the inflection roller 6 and the rubber roller 7 of the first inflection roller assembly, so an air knife 8 is arranged here to continue to separate the pole piece 3 and the diaphragm 2 by using high-speed airflow;

[0062] The pole piece 3 on the other side of the diaphragm 2 is separated by the inflection of the inflection roller 6 before passing through the matching position of the inflection roller 6 and the rubber roller 7 of the second inflection roller assembly, so an air knife 8 is arranged here to continue to separate the pole piece 3 and the diaphragm 2 by using high-speed airflow;

[0063] like Figure 1 As shown, the two wind knives 8 of the present invention are both arranged on the second traction path 200 between the first reverse curved roller assembly and the second reverse curved roller assembly.

[0064] As a preferred embodiment of the utility model, the cross-sectional area of ​​the guide portion 81 gradually decreases from being away from the diaphragm 6 to being close to the diaphragm 6; an airflow channel connected to the blowing outlet 82 is formed inside the guide portion 81, and the cross-sectional area of ​​the airflow channel gradually decreases from being away from the diaphragm 6 to being close to the diaphragm 6; the guide portion 81 and the gas passage inside it gradually shrink from being away from the diaphragm 6 to being close to the diaphragm 6, and the cross-sectional area at the blowing outlet 82 is the smallest, so as to facilitate the adjustment of the direction of the blowing airflow to separate the pole piece 3 and the diaphragm 2.

[0065] As a preferred embodiment of the present invention, Figure 2 As shown, the traction mechanism 11 includes a clamping mechanism 111 and a third driving device 112. The clamping mechanism 111 is used to clamp one end of the diaphragm 2. The third driving device 112 is connected to the clamping mechanism 111 and is used to drive the clamping mechanism 111 to rotate to reel up the traction diaphragm 2. In a specific embodiment, the third driving device 112 is a driving motor.

[0066] When the battery pole piece and diaphragm separation device of the utility model is in use, the unseparated diaphragm 2 and the pole pieces 3 on both sides thereof pass through the first roller 4 along the vertical upward traction direction; then pass through the curved roller 5 along the inclined traction direction toward the upper right to be bent, and pass through the first reverse curved roller assembly to be reversely bent, so that the edge of the pole piece 3 on one side of the diaphragm 2 is lifted and initially separated from the diaphragm 2, and then the initially separated pole piece 3 is completely separated from the diaphragm 2 by the wind knife 8, and the separated pole piece 3 falls into the pole piece collection box 9 for collection;

[0067] When passing through the first reverse-bend roller assembly, the pole piece 3 on the other side of the diaphragm 2 is reversely bent along the reverse-bend roller 6 of the first reverse-bend roller assembly, and then continues to pass through the second reverse-bend roller assembly along the inclined traction direction toward the lower left, and the pole piece 3 on the other side of the diaphragm 2 is reversely bent again under the action of the reverse-bend roller 6 of the second reverse-bend roller assembly, so that the edge of the pole piece 3 on the other side of the diaphragm 2 is lifted and separated from the diaphragm 2 for the first time, and then the pole piece 3 separated for the first time is completely separated from the diaphragm 2 by the wind knife 8, and the separated pole piece 3 falls into the pole piece collection box 9 for collection;

[0068] Then, after passing through the second inverse roller assembly, the diaphragm 2 continues to pass through the second roller 12 in the horizontal direction to the traction mechanism 11 for winding.

[0069] It should be noted that the above implementation mode is only used to illustrate the principle of the utility model and is not intended to limit the protection scope of the utility model. Without departing from the principle of the utility model, those skilled in the art can adjust the above method so that the utility model can be applied to more specific application scenarios.

[0070] For example, in a replaceable embodiment, the roller assembly of the utility model may also include a driven roller arranged opposite to the curved roller 5, the curved roller 5 and the driven roller are arranged opposite to each other on both sides of the diaphragm 2, the curved roller 5 is an active roller and cooperates with the driven roller to clamp and pull the diaphragm 2 and the pole piece 3 thereon, a part of the curved roller 5 is covered with the diaphragm 2 for bending the pole piece 3 on the diaphragm 2, and through this structural design, a better bending effect of the pole piece 3 can be achieved.

[0071] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A device for separating a battery pole piece from a diaphragm, characterized in that: including a roller assembly and a separation component; The roller assembly is used to bend the pole piece (3) on the diaphragm (2) at least once and reversely bend the pole piece (3) at least once during the process of pulling the diaphragm (2), so that the pole piece (3) is initially separated from the diaphragm (2); The separation component is used to perform a secondary separation on the initially separated pole piece (3) and the diaphragm (2).

2. The battery pole piece and diaphragm separation device according to claim 1, characterized in that: The separation component is an air knife (8), and the air knife (8) is used to perform a secondary separation on the initially separated pole piece (3) and the diaphragm (2) by using a blowing airflow.

3. The battery pole piece and diaphragm separation device according to claim 1, characterized in that: The roller assembly comprises a curved roller assembly and a reverse curved roller assembly; the curved roller assembly is used to bend the pole piece (3); and the reverse curved roller assembly is used to reversely bend the pole piece (3).

4. The battery pole piece and diaphragm separation device according to claim 3, characterized in that: The roller assembly comprises a curved roller (5), a first reverse curved roller assembly and a second reverse curved roller assembly which are arranged in sequence along the traction path; The curved roller (5) is used to bend the pole piece (3), the first reverse curved roller assembly is used to reversely bend the pole piece (3) passing through the curved roller (5), and the second reverse curved roller assembly is used to reversely bend the pole piece (3) passing through the first reverse curved roller assembly.

5. The battery pole piece and diaphragm separation device according to claim 4, characterized in that: The roller assembly also includes a tension roller (10); The tension roller (10) is arranged on a traction path between the first inverse curved roller assembly and the second inverse curved roller assembly, and the tension roller (10) is used to adjust the tensioning force of the diaphragm (2) between the first inverse curved roller assembly and the second inverse curved roller assembly.

6. The device for separating a battery pole piece from a diaphragm according to claim 3, characterized in that: The reverse curved roller assembly comprises a reverse curved roller (6) and a rubber roller (7); The reverse bending roller (6) and the rubber roller (7) are arranged oppositely on two sides of the diaphragm (2), and the reverse bending roller (6) is used to reversely bend the pole piece (3) on the diaphragm (2).

7. The device for separating a battery pole piece from a diaphragm according to claim 6, characterized in that: The reverse bending roller assembly also includes a first driving device and a second driving device; The first driving device is drivingly connected to the rubber roller (7) for adjusting the pressure between the rubber roller (7) and the reverse curved roller (6); The second driving device is drivingly connected to the inverse curved roller (6) for driving the inverse curved roller (6) to rotate.

8. The device for separating a battery pole piece from a diaphragm according to claim 2, characterized in that: The wind knife (8) comprises a guide portion (81), wherein the guide portion (81) is gradually bent or inclined from an end away from the diaphragm (2) to an end close to the diaphragm (2), and the end of the guide portion (81) close to the diaphragm (2) is a blowing outlet (82); The blowing outlet (82) is used to perform secondary separation on the initially separated pole piece (3) and the diaphragm (2) by using the blowing airflow, and the guiding portion (81) is used to guide the pole piece (3).

9. The battery pole piece and diaphragm separation device according to claim 8, characterized in that: The cross-sectional area of ​​the guide portion (81) gradually decreases from a direction away from the diaphragm (2) to a direction close to the diaphragm (2); and / or An air flow channel connected to the air blowing outlet (82) is formed inside the guide portion (81), and the cross-sectional area of ​​the air flow channel gradually decreases from away from the diaphragm (2) to closer to the diaphragm (2).

10. The device for separating a battery pole piece from a diaphragm according to any one of claims 1 to 9, characterized in that: It also includes a traction mechanism (11) arranged at the end of the traction path; The traction mechanism (11) comprises a clamping mechanism (111) and a third driving device (112); the clamping mechanism (111) is used to clamp one end of the diaphragm (2); and the third driving device (112) is transmission-connected to the clamping mechanism (111) to drive the clamping mechanism (111) to rotate.

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