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 traction mechanism, an air suspension supporting device and a negative pressure adsorption device, wherein the traction mechanism is used for pulling the diaphragm; the air suspension supporting device is used for carrying out air suspension supporting on the first side of the diaphragm, and the negative pressure adsorption device is used for carrying out negative pressure adsorption on a pole piece on the second side of the diaphragm, so that the pole piece is separated from the diaphragm. According to the utility model, effective separation of the pole piece and the diaphragm can be realized.

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] A battery cell includes a separator, a positive electrode, a negative electrode and an electrolyte. When the battery is decomposed and recycled, the battery separator and the positive and negative electrode sheets need to be separated, and then the separator and the positive and negative electrode sheets 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, which has a poor separation effect and 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 achieve effective separation of 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 traction mechanism, an air suspension support device and a negative pressure adsorption device; the traction mechanism is used to pull the diaphragm; the air suspension support device is used to perform air suspension support on a first side of the diaphragm, and the negative pressure adsorption device is used to perform negative pressure adsorption on the pole piece on the second side of the diaphragm, so that the pole piece is separated from the diaphragm.

[0007] When adopting the above-mentioned technical scheme, the separation device of the utility model utilizes negative pressure adsorption and air suspension support to effectively separate the electrode pieces on the diaphragm; specifically, the airflow is utilized to perform air suspension support on the first side of the diaphragm to limit the diaphragm from deviating in the direction away from the negative pressure adsorption device, and at the same time, the negative pressure adsorption device utilizes negative pressure to adsorb the electrode piece on the second side of the diaphragm. In the process of pulling the diaphragm, the electrode piece adsorbed by the negative pressure is gradually separated from the pulled diaphragm, so that the separation device of the utility model can effectively separate the electrode piece and the diaphragm.

[0008] Furthermore, the negative pressure adsorption device is a negative pressure adsorption roller, and the negative pressure adsorption roller is used to utilize negative pressure to adsorb the pole piece and drive the pole piece to rotate, so that the pole piece is separated from the diaphragm.

[0009] Furthermore, the negative pressure adsorption roller includes a negative pressure suction nozzle array and a rotating roller body, the negative pressure suction nozzle array includes a plurality of negative pressure suction nozzles arranged axially along the outer wall of the rotating roller body; the rotating roller body is used to drive the negative pressure suction nozzle array to rotate, and the negative pressure suction nozzle array is used to turn on the negative pressure to adsorb the electrode piece or turn off the negative pressure to release the electrode piece.

[0010] Furthermore, a plurality of rows of negative pressure nozzles are evenly distributed on the outer wall of the rotating roller along the circumferential direction.

[0011] Furthermore, one end of the air suspension support device close to the diaphragm is a blowing plane, and the blowing plane is used to perform air suspension support on the first side of the diaphragm by utilizing airflow.

[0012] Furthermore, the traction mechanism includes a clamping jaw mechanism and a driving device; the clamping jaw is used to clamp one end of the diaphragm, and the driving device is transmission-connected to the clamping jaw mechanism to drive the clamping jaw mechanism to rotate.

[0013] Furthermore, the rotating roller body is provided with an identification sensor at the position of the negative pressure nozzle array, and the identification sensor is used to identify the pole piece on the diaphragm.

[0014] Furthermore, it also includes a pole piece collection box, which includes a box body and an inclined material receiving portion.

[0015] Furthermore, the identification sensor is a color sensor.

[0016] Furthermore, pressure regulating valves and / or throttle valves are provided on the gas paths of the air suspension support device and the negative pressure adsorption device.

[0017] When the above technical solution is adopted, the beneficial effects of the utility model are:

[0018] (1) The separation device of the utility model utilizes a negative pressure adsorption roller and an air suspension support device to effectively separate the electrode piece on the diaphragm; specifically, the air suspension support device utilizes an air flow to perform air suspension support on one side of the diaphragm, thereby preventing the diaphragm from deviating in a direction away from the negative pressure adsorption device, resulting in a large distance between the electrode piece and the negative pressure adsorption roller, which causes the diaphragm to be unable to be adsorbed, and supporting the diaphragm with an air flow can prevent the diaphragm from contacting the air suspension support device, thereby preventing the diaphragm from being scraped off; the negative pressure adsorption roller opens the negative pressure adsorption electrode piece and drives the electrode piece to rotate, so that in the process of pulling the diaphragm, the electrode piece and the diaphragm are gradually separated and away from the diaphragm, and after rotating a certain angle, the negative pressure adsorption roller closes the negative pressure release electrode piece for recovery.

[0019] (2) The negative pressure adsorption roller of the utility model includes multiple rows of negative pressure suction nozzles. After the electrode reaches the negative pressure adsorption position, the negative pressure suction nozzle row at the negative pressure adsorption position is opened to adsorb the front end head of the electrode, and at the same time drives the adsorbed part of the electrode to rotate, so that the adsorbed part of the electrode is separated from the diaphragm. As the rotation process proceeds, the negative pressure adsorption rows of the remaining rows are opened to adsorb the corresponding positions of the electrode and drive the adsorbed part of the electrode to rotate, so that the electrode is gradually separated from the diaphragm from the front end to the rear end along the traction direction.

[0020] (3) After the negative pressure adsorption roller of the utility model drives the electrode to rotate a certain angle, as the rotation process proceeds, the negative pressure release electrode is closed row by row from front to back along the rotation direction, so that the separated electrode is separated from the negative pressure adsorption roller, so that the separated electrode can be collected.

[0021] (4) The utility model sets an identification sensor at the negative pressure adsorption position to determine whether the electrode piece has reached the negative pressure adsorption position. When it is detected that the electrode piece has reached the negative pressure adsorption position, the negative pressure of the corresponding negative pressure suction nozzle array is turned on to adsorb the electrode piece and drive the electrode piece to rotate, so that the electrode piece is separated from the diaphragm and away from the diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0023] Figure 1 This is a front view of the separation device for the battery pole piece and the diaphragm of the utility model;

[0024] 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;

[0025] Figure 3 It is a partial schematic diagram of the separation device of the battery pole piece and the diaphragm of the utility model.

[0026] Reference numerals list :

[0027] 1- traction mechanism; 2- air suspension support device; 3- negative pressure adsorption roller; 4- pole piece collection box; 5- battery loading box; 6- diaphragm; 7- pole piece; 11- clamping mechanism; 12- driving device; 21- air inlet; 22- blowing plane; 31- negative pressure suction nozzle array; 41- box body; 42- inclined material receiving part. DETAILED DESCRIPTION

[0028] 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.

[0029] 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" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] 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.

[0031] 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.

[0032] like Figures 1 to 3 As shown, the embodiment of the utility model discloses a device for separating a battery pole piece from a diaphragm, comprising a traction mechanism 1, an air suspension support device 2, a negative pressure adsorption roller 3, a pole piece collection box 4 and a battery loading box 5;

[0033] The traction mechanism 1 reels the diaphragm 6 from one end of the diaphragm 6 and tractions the diaphragm 6 in a vertically upward direction. The air suspension support device 2 and the negative pressure adsorption roller 3 are relatively arranged on both sides of the diaphragm 6. The air suspension support device 2 uses air flow to perform air suspension support on the first side of the diaphragm 6, and the negative pressure adsorption roller 3 performs negative pressure adsorption on the pole piece 7 on the second side of the diaphragm 6. As the traction process proceeds, the pole piece 7 adsorbed by the negative pressure is gradually separated from the diaphragm 6 being pulled.

[0034] See also Figure 1 As shown, in the embodiment of the utility model, negative pressure adsorption rollers 3 are respectively arranged at the positions on both sides of the corresponding diaphragm 6 to perform negative pressure adsorption on the pole pieces 7 on both sides of the diaphragm 6 respectively; it can be understood that those skilled in the art can specifically set the traction direction and the number of air suspension support devices 2 and negative pressure adsorption rollers 3 according to actual conditions, and the utility model does not make specific limitations, as long as the effect of separating the pole pieces 7 on both sides of the diaphragm 6 can be achieved.

[0035] As a preferred embodiment of the present invention, continue to refer to Figure 1 , an unseparated diaphragm 6 and a pole piece 7 thereon are placed in the battery loading box 5, and the diaphragm 6 passes through the channel between the air suspension support device 2 and the negative pressure adsorption roller 3 in the vertical upward direction, and the air suspension support device 2 uses the air flow to air-suspend the first side of the diaphragm 6, and the negative pressure adsorption roller 3 uses the negative pressure to adsorb the pole piece 7 on the second side of the diaphragm 6; at the same time, the negative pressure adsorption roller 3 drives the adsorbed pole piece 7 to rotate, so that the pole piece 7 is gradually separated from the diaphragm 6 from the front end to the rear end in the traction direction; and after the negative pressure adsorption roller 3 drives the pole piece 7 to rotate a certain angle, it can close the negative pressure to release the pole piece 7;

[0036] In a specific embodiment, the side of the negative pressure adsorption roller 3 close to the diaphragm 6 is the negative pressure adsorption position, and the side away from the diaphragm 6 is the release position; the negative pressure adsorption roller 3 opens the negative pressure adsorption electrode piece 7 at the corresponding negative pressure adsorption position, and at the same time drives the electrode piece 7 to rotate to the release position on the side away from the diaphragm 6, and then closes the negative pressure release electrode piece 7, so that the separated electrode piece 7 falls into the electrode piece collection box 4 for collection.

[0037] As a preferred embodiment of the present invention, the negative pressure adsorption roller 3 includes a rotating roller body 32 and a negative pressure nozzle array 31. The outer wall of the rotating roller body 32 is provided with a plurality of negative pressure nozzles along the axial direction to form the negative pressure nozzle array 31; and the outer wall of the rotating roller body 32 of the embodiment of the present invention is evenly distributed with a plurality of negative pressure nozzle arrays 31 in the circumferential direction; the rotating roller body 32 has an inner cavity and is connected to the negative pressure pipeline, and the plurality of negative pressure nozzle arrays 31 are all connected to the inner cavity of the rotating roller body 32, so that the negative pressure passes through the negative pressure pipeline and the inner cavity to the plurality of negative pressure nozzle arrays 31, thereby providing negative pressure for the negative pressure nozzle array 31;

[0038] And the negative pressure of each column of negative pressure nozzles 31 can be controlled individually, that is to say, the negative pressure of each column of negative pressure nozzles 31 can be controlled to be turned on or off individually to adsorb or release the electrode 7; when separating, the rotating roller 32 drives the multiple columns of negative pressure nozzles 31 to rotate, and the multiple columns of negative pressure nozzles 31 open the negative pressure adsorbing electrode 7 one by one from front to back along the rotation direction; after driving the electrode 7 to rotate a certain angle, the multiple columns of negative pressure nozzles 31 close the negative pressure releasing electrode 7 one by one from front to back along the rotation direction.

[0039] See also Figure 3 The specific process of separating the pole piece 7 and the diaphragm 6 of the utility model is as follows:

[0040] In the process of pulling the diaphragm 6, when the front end of the pole piece 7 reaches the negative pressure adsorption position, the negative pressure suction nozzle array 31 corresponding to the front end of the pole piece 7 starts to apply negative pressure for adsorption, and at the same time, the negative pressure suction nozzle array 31 drives the front end of the pole piece 7 to rotate in a direction away from the diaphragm 6; and as the rotation and pulling process proceeds, the remaining negative pressure suction nozzle arrays 31 rotate to the negative pressure adsorption position in sequence, and start negative pressure one by one to adsorb the corresponding position of the pole piece 7 and drive the pole piece 7 to rotate, and finally the pole piece 7 is gradually separated from the diaphragm 6 from the front end to the rear end;

[0041] After driving the electrode 7 to rotate a certain angle, the front end head of the electrode 7 reaches the upper position of the electrode collection box 4, and the negative pressure of the negative pressure suction nozzle array 31 corresponding to the head of the electrode 7 is closed first, and then as the rotation process proceeds, the negative pressure of the remaining columns of negative pressure suction nozzle arrays 31 are closed one by one, and finally the electrode 7 falls into the electrode collection box 4 for recovery.

[0042] Exemplarily, the negative pressure adsorption roller 3 of the embodiment of the utility model includes 8 rows of negative pressure suction nozzles 31 evenly distributed along the circumference of the outer wall of the rotating roller body 32; it can be understood that those skilled in the art can specifically set the number of rows of negative pressure suction nozzles 31 and the total number of negative pressure suction nozzles, and the utility model does not make specific limitations.

[0043] As a preferred embodiment of the utility model, the end of the air suspension support device 2 close to the diaphragm 2 is a blowing plane 22, and the end away from the diaphragm 2 is provided with an air inlet 21, and the air inlet 21 is connected to the blowing plane 22 for introducing gas; preferably, the introduced gas is compressed air.

[0044] It should be noted that those skilled in the art can specifically set the structure of the air suspension support device 2 as long as the effect of air suspension support for the diaphragm 2 can be achieved, and the present invention does not make any specific limitation.

[0045] As a preferred embodiment of the utility model, the traction mechanism 1 includes a clamping mechanism 11 and a driving device 12. The driving device 12 is connected to the clamping mechanism 11 to drive the clamping mechanism 11 to rotate. The clamping mechanism 11 clamps one end of the diaphragm 6 and rotates to reel the diaphragm 6 and traction the diaphragm 6. In a specific embodiment, the driving device 12 is a driving motor.

[0046] It should be noted that those skilled in the art may specifically set the structure of the traction mechanism 1 , for example, a pair of clamping rollers may rotate in opposite directions to clamp the traction diaphragm 6 , as long as the traction effect on the diaphragm 6 can be achieved, and the utility model does not make any specific limitation.

[0047] As a preferred embodiment of the utility model, the rotating roller 32 is provided with an identification sensor at the position of the negative pressure suction nozzle array 31. When the identification sensor recognizes that the electrode piece 7 on the diaphragm 6 reaches the negative pressure adsorption position, the negative pressure of the corresponding negative pressure suction nozzle array 31 is turned on to start adsorbing the electrode piece 7.

[0048] In a specific embodiment, the identification sensor is a color sensor; those skilled in the art may also use other types of sensors, which are not specifically limited in the present invention, as long as the effect of identifying the pole piece 7 can be achieved.

[0049] As a preferred embodiment of the utility model, pressure regulating valves and / or throttle valves are provided on the gas paths of the negative pressure adsorption roller 3 and the air suspension support device 2 to correspondingly adjust the gas pressure, flow rate and gas volume.

[0050] As a preferred embodiment of the utility model, the electrode collection box 4 includes a box body 41 and an inclined material connection portion 42, and the separated electrode pieces 7 slide along the inclined material connection portion 42 into the box body 41 for collection; the end of the inclined material connection portion 42 close to the diaphragm 6 is spaced apart from the diaphragm 6 or the end of the inclined material connection portion 42 close to the diaphragm 6 is a roller, and the roller is in rolling contact with the diaphragm 6 to avoid scraping the diaphragm 6.

[0051] It should be noted that those skilled in the art can set the specific structure of the electrode collection box 4 as long as the separated electrode 7 can be collected and the diaphragm 6 can be avoided from being scraped off. The utility model does not make any specific limitation.

[0052] When the battery pole piece and diaphragm separation device of the utility model is in use, the air suspension support device 2 supports the diaphragm 6 through the airflow, and when the pole piece 7 reaches the negative pressure adsorption position, the negative pressure adsorption roller 3 starts the negative pressure adsorption of the pole piece 7 and drives the pole piece 7 to rotate; because the pole pieces 7 of the stacked battery are spaced apart on the diaphragm 6, it is necessary to judge the time when each pole piece 7 reaches the negative pressure adsorption position, so as to control the negative pressure suction nozzle row 31 of the corresponding row on the negative pressure adsorption roller 3 to start the negative pressure to negatively adsorb the pole piece 7;

[0053] The utility model can be identified by setting a color sensor; when the color sensor identifies that the electrode 7 reaches the negative pressure adsorption position, the negative pressure suction nozzle array 31 of the corresponding column is controlled to turn on the negative pressure to adsorb the electrode 7, and then as the rotation process proceeds, multiple columns of negative pressure suction nozzle arrays 31 turn on the negative pressure adsorption electrode 7 one by one and drive the electrode 7 to rotate.

[0054] The utility model can also judge whether the pole piece 7 reaches the negative pressure adsorption position according to the distance between two adjacent pole pieces 7 on one side of the diaphragm 6 and the pulling speed of the diaphragm 6;

[0055] Since the spacing between two adjacent pole pieces 7 on one side of the diaphragm 6 is a fixed value, the moment or interval time when the pole piece 7 reaches the negative pressure adsorption position can be calculated by the pulling speed of the diaphragm 6 and the fixed value of the spacing between the two adjacent pole pieces 7;

[0056] Specifically, the pulling speed v of the diaphragm 6 is obtained, and after the previous pole piece 7 reaches the negative pressure adsorption position, the time interval t for the next pole piece 7 to arrive is calculated according to the pulling speed v of the diaphragm 6 and the distance d between two adjacent pole pieces 7, and the calculation formula is: t=d / v; then the specific time when the next pole piece 7 arrives can be obtained according to the time interval;

[0057] A person skilled in the art may also determine whether the next pole piece 7 reaches the negative pressure adsorption position after the previous pole piece 7 reaches the negative pressure adsorption position according to whether the pulling distance traveled by the diaphragm 6 is equal to the spacing value between two adjacent pole pieces 7 .

[0058] 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.

[0059] For example, in an alternative embodiment, a pair of clamping rollers can be added to the traction path to clamp and pull the diaphragm 6. The air suspension support device 2 and the negative pressure adsorption roller 3 are arranged on the traction path between the pair of clamping rollers and the traction mechanism 1. By setting up a pair of clamping rollers, the diaphragm 6 has a certain tensioning force, so as to separate the pole piece 7 adsorbed by negative pressure from the pulled diaphragm 6.

[0060] 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: It comprises a traction mechanism (1), an air suspension support device (2) and a negative pressure adsorption device: The traction mechanism (1) is used to pull the diaphragm (6); The air suspension support device (2) is used to perform air suspension support on the first side of the diaphragm (6), and the negative pressure adsorption device is used to perform negative pressure adsorption on the pole piece (7) on the second side of the diaphragm (6), so that the pole piece (7) is separated from the diaphragm (6).

2. The battery pole piece and diaphragm separation device according to claim 1, characterized in that: The negative pressure adsorption device is a negative pressure adsorption roller (3); The negative pressure adsorption roller (3) is used to utilize negative pressure to adsorb the pole piece (7) and drive the pole piece (7) to rotate, so that the pole piece (7) is separated from the diaphragm (6).

3. The battery pole piece and diaphragm separation device according to claim 2, characterized in that: The negative pressure adsorption roller (3) comprises a negative pressure adsorption nozzle array (31) and a rotating roller body (32); The negative pressure suction nozzle array (31) comprises a plurality of negative pressure suction nozzles arranged axially along the outer wall of the rotating roller body (32); the rotating roller body (32) is used to drive the negative pressure suction nozzle array (31) to rotate, and the negative pressure suction nozzle array (31) is used to turn on negative pressure to adsorb the electrode piece (7) or turn off negative pressure to release the electrode piece (7).

4. The battery pole piece and diaphragm separation device according to claim 3, characterized in that: The outer wall of the rotating roller body (32) is evenly distributed with a plurality of negative pressure suction nozzle rows (31) along the circumferential direction.

5. The battery pole piece and diaphragm separation device according to claim 1, characterized in that: One end of the air suspension support device (2) close to the diaphragm is a blowing plane (22), and the blowing plane (22) is used to perform air suspension support on the first side of the diaphragm (6) by utilizing air flow.

6. The battery pole piece and diaphragm separation device according to claim 1, characterized in that: The traction mechanism (1) comprises a clamping claw mechanism (11) and a driving device (12); The clamping mechanism (11) is used to clamp one end of the diaphragm (6), and the driving device (12) is transmission-connected to the clamping mechanism (11) to drive the clamping mechanism (11) to rotate.

7. The battery pole piece and diaphragm separation device according to claim 3, characterized in that: The rotating roller body (32) is provided with an identification sensor at the position of the negative pressure nozzle array (31), and the identification sensor is used to identify the pole piece (7) on the diaphragm (6).

8. The device for separating a battery pole piece from a diaphragm according to claim 1, characterized in that: It also comprises a pole piece collection box (4), wherein the pole piece collection box (4) comprises a box body (41) and an inclined material receiving portion (42).

9. The battery pole piece and diaphragm separation device according to claim 7, characterized in that: The identification sensor is a color sensor.

10. The device for separating a battery pole piece from a separator according to any one of claims 1 to 9, characterized in that: The gas paths of the air suspension support device (2) and the negative pressure adsorption device are both provided with pressure regulating valves and / or throttle valves.

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