Battery cell transfer device and battery cell production system

Abstract

The embodiment of the utility model provides a battery cell transfer device and a battery cell production system. The battery cell transfer device comprises a bracket; the first blocking assembly is arranged on the bracket, comprises a blocking roller and is used for abutting against and blocking a battery cell; the conveying belt assembly is arranged on the support, the blocking strips are arranged on the support, a plurality of idler wheels are arranged on the sides, close to the conveying belt assembly, of the two blocking strips, and the idler wheels are arranged at intervals in the first direction. The rollers protrude out of the surface of the barrier strip in the direction towards the conveyor belt assembly; wherein the first direction is the same as the running direction of the battery cell, and the second direction is intersected with the first direction. According to the battery cell transfer device provided by the embodiment of the invention, collision and damage accidents of the battery cells can be reduced, and the production yield of the battery cells is improved.

Description

Technical Field

[0001] This application belongs to the technical field of battery production, and particularly relates to a core transfer device and a core production system. Background Art

[0002] As a kind of new energy, lithium-ion batteries have the advantages of high energy density and long cycle life, and are widely used in various fields such as electric vehicles and energy storage. During the production process of lithium-ion battery cores from raw materials to finished products offline, multiple production processes are involved, and usually, a transfer device is required for transfer.

[0003] In the prior art, the core transfer device usually includes a blocking mechanism, a conveyor belt, and a motor. Among them, the conveyor belt is driven by the motor to move between workstations to transfer the cores, and the blocking mechanism is used to stop the incoming materials before the next workstation process is completed. However, during the process of blocking the incoming core or transporting the core on the conveyor belt, accidents of core bumping and damage are likely to occur, resulting in poor core production. Summary of the Utility Model

[0004] This application aims to provide a core transfer device to solve the problem that in the prior art, during the process of blocking incoming cores for waiting or transporting on the conveyor belt, accidents of core bumping and damage are likely to occur, resulting in poor core production.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, this application discloses a core transfer device. The core transfer device has a feeding position and a discharging position, and the core transfer device includes:

[0007] A bracket;

[0008] A first blocking assembly, which is arranged on the bracket and is used to block the core at the feeding position; the first blocking assembly includes a blocking roller, and when the core is blocked, the blocking roller abuts against the core;

[0009] A conveyor belt assembly, which is arranged on the bracket and extends from the feeding position to the discharging position. The conveyor belt assembly is used to carry the core and transfer the core from the feeding position to the discharging position;

[0010] And at least two retaining bars, both of which are arranged on the bracket and are respectively located on both sides of the conveyor belt assembly along the second direction. A plurality of rollers are arranged on the side of the two retaining bars close to the conveyor belt assembly. The plurality of rollers are arranged at intervals along the first direction, and the rollers protrude from the surface of the retaining bar towards the conveyor belt assembly;

[0011] Wherein, the first direction is the same as the operating direction of the battery cell, and the second direction intersects the first direction.

[0012] Optionally, the first blocking assembly further includes a cylinder, a guide bearing, and a fixing plate;

[0013] The fixing plate is connected to the bracket; the cylinder is connected to the fixing plate, the guide bearing is movably connected to the fixing plate, the blocking roller is connected to the guide bearing, and the cylinder is used to drive the fixing plate to move along the third direction on the guide bearing so that the blocking roller moves along the third direction, wherein the third direction is perpendicular to the first direction and the second direction.

[0014] Optionally, the distance between two adjacent rollers on the strip along the first direction is b, and b satisfies: 25 mm ≤ b ≤ 110 mm.

[0015] Optionally, on the side of the strip close to the conveyor belt assembly, the protruding distance c of the roller protruding from the surface of the strip towards the conveyor belt assembly satisfies: 2 mm ≤ c ≤ 3 mm.

[0016] Optionally, the diameter of the roller is e, and e satisfies: 16 mm ≤ e ≤ 20 mm.

[0017] Optionally, the conveyor belt assembly includes a first conveyor belt assembly and a second conveyor belt assembly, and the first conveyor belt assembly and the second conveyor belt assembly are arranged on the bracket at intervals along the first direction; and the distance d between them along the first direction satisfies: e ≤ d ≤ e + 5 mm.

[0018] Optionally, the battery cell transfer device further includes: a transition roller, which is rotatably connected to the bracket and is located between the first conveyor belt assembly and the second conveyor belt assembly.

[0019] Optionally, the battery cell transfer device further includes a cleaning mechanism, which is connected to the side of the bracket away from the strip and contacts the conveyor belt assembly; when the conveyor belt assembly drives along the first direction, the cleaning mechanism cleans the conveyor belt assembly along the first direction;

[0020] Or, it further includes an electrostatic eliminator, which is connected to the bracket, and the electrostatic eliminator is used to eliminate static electricity.

[0021] Optionally, the battery cell transfer device further includes a second blocking assembly;

[0022] The second blocking assembly includes a blocking strip, which is connected to the bracket, and the blocking strip is used to block the battery cell at the blanking position;

[0023] The second conveyor belt assembly is used to transport the battery cells to the discharging position. When the battery cells rotate to the discharging position and reach the position of the blocking bar, the second conveyor belt assembly stops operating.

[0024] In a second aspect, the present application also discloses a battery cell production system, which is characterized by including the battery cell transfer device as described in any one of the above.

[0025] In the embodiments of the present application, when the battery cells are transported by the blocking mechanism and the conveyor belt assembly, both the blocking assembly and the transmission assembly contact the battery cells through the wheel bodies, changing the original surface contact to point contact, and when separating from the surface of the battery cells, it is a rolling separation. Thereby, the contact area and the friction track between the battery cells and the blocking assembly / transmission assembly are reduced, the risk of generating scratches on the surface of the battery cells is lowered, and the production yield of the battery cells is further improved.

[0026] Additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0027] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0028] Figure 1 is a schematic structural diagram of a battery cell transfer device described in an embodiment of the present application;

[0029] Figure 2 is Figure 1 one of the schematic structural diagrams of the arrangement of the blocking bar rollers of the battery cell transfer device shown in

[0030] Figure 3 is Figure 2 a partial enlarged schematic diagram of the area E shown in

[0031] Figure 4 is Figure 1 the other schematic structural diagram of the arrangement of the blocking bar rollers of the battery cell transfer device shown in

[0032] Figure 5 is a schematic structural diagram of a blocking device described in an embodiment of the present application;

[0033] Figure 6 is an overall schematic diagram of the arrangement of the blocking bar rollers shown in an embodiment of the present application.

[0034] Reference numerals: 1 - battery cell transfer device, 2 - battery cell, 10 - bracket, 11 - conveyor belt assembly, 111 - first conveyor belt assembly, 112 - second conveyor belt assembly, 12 - stop bar, 13 - roller, 14 - transition roller, 113 - conveyor belt, 114 - driving member, 115 - rotating shaft, 15 - cleaning mechanism, 16 - static eliminator, 17 - first blocking assembly, 170 - cylinder, 171 - guiding bearing, 172 - blocking roller, 173 - fixing plate, 18 - second blocking assembly, 180 - blocking bar, 181 - limiting block, X - first direction, Y - second direction, Z - third direction. Detailed implementation manners

[0035] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation to the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without making creative efforts belong to the scope of protection of this application.

[0036] The terms "first" and "second" in the description and claims of this application may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects. The character " / " generally means an "or" relationship between the associated objects before and after.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0038] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0039] The following will, with reference to the accompanying drawings, through specific embodiments and their application scenarios, provide a detailed description of the battery cell transfer device and the battery cell production system provided by the embodiments of the present application.

[0040] As Figures 1 to 6 shown, the embodiments of the present application provide a battery cell transfer device. The battery cell transfer device 1 has a loading position and an unloading position. The battery cell transfer device 1 includes: a bracket 10; a first blocking assembly 17, including a blocking roller 172, which is arranged on the bracket 10 and is used to block the battery cell 2 by abutting the blocking roller 172 at the loading position to achieve the purpose of blocking the battery cell 2; a conveyor belt assembly 11, the conveyor belt assembly 11 is arranged on the bracket 10 and extends from the loading position to the unloading position, and the conveyor belt assembly 11 is used to carry the battery cell 2 and transfer the battery cell 2 from the loading position to the unloading position; and at least two retaining bars 12, the retaining bars 12 are all arranged on the bracket 10 and are respectively located on both sides of the conveyor belt assembly 11 along the second direction Y. A plurality of rollers 13 are arranged on the side of the two retaining bars 12 close to the conveyor belt assembly 11. The plurality of rollers 13 are arranged at intervals along the first direction X, and the rollers 13 protrude from the surface of the retaining bar 12 in the direction towards the conveyor belt assembly 11, and the protruding part contacts the battery cell 2 from the side; wherein, the first direction X is the same as the running direction of the battery cell 2, and the second direction Y intersects with the first direction X.

[0041] Specifically, the battery cell transfer device includes a bracket 10, a first blocking assembly 17, a conveyor belt assembly 11, retaining bars 12 and rollers 13. The bracket 10 is a support frame with relatively high rigidity. The two ends of the bracket 10 are respectively a loading position and an unloading position. The conveyor belt assembly 11 is arranged on the bracket 10 and extends from the loading position to the unloading position. The battery cell 2 is placed on the conveyor belt assembly 11 from the loading position and is transferred from the loading position to the unloading position. The placement of the battery cell 2 from the loading position and the sending out from the unloading position can be manually completed by a person or can be completed by an automated device such as a manipulator. In this regard, the embodiments of the present application do not make any restrictions.

[0042] The conveyor belt assembly 11 includes a conveyor belt 113, a driving member 114, and a rotating shaft 112. The driving member 114 is connected to the bracket 10 and is in transmission connection with the rotating shaft 112 to drive the rotating shaft 112 to rotate. The rotating shaft 112 is connected to the bracket 10, and the conveyor belt 113 is sleeved on the rotating shaft 112, so as to drive the conveyor belt 113 to transport the battery cell 2 along the first direction X through the rotating shaft 112. The driving member 114 can be a motor.

[0043] The retaining bars 12 are arranged on opposite sides of the bracket 10 along the second direction. There are at least two retaining bars 12, which can also be 3, 4, etc. A plurality of rollers 13 are arranged on the retaining bars 12 along the first direction. The battery cell 2 is transported along the first direction X between the rollers on the retaining bars 12, converting the static friction during the movement of the battery cell 2 into rolling friction, thereby greatly reducing the frictional force during the movement of the battery cell 2 and facilitating the transportation process of the battery cell 2. The first direction is as shown by the X direction in Figure 1 and the second direction is as shown by the Y direction in Figure 1 The first direction and the second direction are still applicable in subsequent embodiments.

[0044] In the above solution, by changing the original surface contact between the blocking component / transport component and the battery cell housing to point contact of the wheel body, and the rolling separation when disengaging from the battery cell surface, the contact area and friction track between the battery cell and the blocking component / transport component are reduced, the risk of scratching on the battery cell surface is lowered, and the production yield of the battery cell is further improved.

[0045] Specifically, after adopting this solution, the production yield is compared with that before not adopting this solution. During a certain period of time, if there are visible scratches on the battery cell housing to the naked eye, it is regarded as appearance defect. By counting the number of battery cell appearance defects, calculating the defect rate, and comparing the two defect rates.

[0046] Table 1

[0047]

[0048] Table 2

[0049]

[0050]

[0051] By calculating the average value of the defect rates in Table 1 and Table 2, it can be obtained that the average defect rate before improvement is 0.2086%, and the average defect rate after improvement is 0.0029%. Compared with each other, the defect rate of the battery cell has increased by 71 times compared with that before improvement.

[0052] Among them, referring to Figure 2, the distance a between two opposite rollers 13 on the retaining strip 12, the length of the battery cell 2 in the second direction is w, and the relationship between w and a can satisfy w + 2 mm ≤ a ≤ w + 4 mm. In the embodiment of the present application, after determining w and making a satisfy w + 2 mm ≤ a ≤ w + 4 mm, the distance between the rollers 13 on adjacent retaining strips can satisfy w + 2 mm ≤ a ≤ w + 4 mm, which can make the distance between the rollers match the length of the battery cell in the second direction Y, and avoid the collision between the battery cell and the rollers 13 on the retaining strip caused by the mismatch between the length of the battery cell and the rollers 13. Exemplarily, when w is 20 mm, a can be 22 mm, 23 mm, 24 mm; when w is 30 mm, a can be 32 mm, 33 mm, 34 mm.

[0053] In the embodiment of the present application, by setting the first blocking component 17 at the feeding position, during the process of feeding the battery cells, the first blocking component 17 can block the battery cells 2, avoiding the collision between the battery cells when there are too many battery cells 2 or there are retained battery cells. Through the rollers 13 on the retaining strip 12, not only can the transportation of the battery cells be smoother and more convenient, but also the collision contact between the battery cells and the retaining strip during the transportation process is isolated by the rollers 13, improving the production yield of the battery cells. Further improve the production yield of the battery cells.

[0054] Optionally, the distance between two adjacent rollers 13 on the retaining strip 12 along the first direction X is b, and b satisfies: 25 mm ≤ b ≤ 110 mm.

[0055] Specifically, the distance between two adjacent rollers on the retaining strip 12 along the first direction is b. If b is too large, the battery cell 2 is likely to directly collide with the retaining strip 12 during transportation, reducing the production yield of the battery cell 2. If b is too small, more rollers 13 need to be provided on the retaining strip 12, resulting in a higher cost. When the housing of the battery cell 2 is square, the housing side includes two large sides and two small sides. When a single battery cell 2 is transported by a conveyor belt, it is generally placed sideways, that is, with the small side of the battery cell housing as the forward direction. Considering that the current length range L of the battery cell housing is generally 75 mm - 330 mm, and at least two rollers 13 are always in contact with and guiding the battery cell 2 during operation, b should be within the range of 1 / 3 * L. Therefore, in the embodiment of the present application, b satisfies 25 mm ≤ b ≤ 110 mm, which can avoid the collision between the battery cell 2 and the retaining strip caused by too large a distance between the rollers 13, further improving the production yield of the battery cells, and can also avoid the problem of high cost caused by too small a distance between the rollers 13.

[0056] Exemplarily, b can be 25 mm, 30 mm, 35 mm, 40 mm, 110 mm, etc.

[0057] Optionally, on the side of the stop bar 12 close to the conveyor belt assembly 11, the protruding distance c of the roller 13 protruding towards the conveyor belt assembly 11 from the surface of the stop bar 12 satisfies: 2 mm ≤ c ≤ 3 mm.

[0058] Referring to Figure 2 , the distance c that the roller 13 protrudes towards the conveyor belt from the stop bar 12 satisfies 2 mm ≤ c ≤ 3 mm. Exemplarily, c can be 2 mm, 2.5 mm, 3 mm, etc. The roller 13 is arranged to protrude from the stop bar 12, which can avoid direct contact between the roller and the stop bar 12 during the transportation of the battery cell, thus avoiding collision between the stop bar 12 and the battery cell during transportation, further improving the production yield of the battery cell, and making the transfer of the battery cell 2 smoother.

[0059] Optionally, the diameter of the roller 13 is e, and e satisfies: 16 mm ≤ e ≤ 20 mm.

[0060] Specifically, the roller 13 is arranged on the stop bar 12. If the diameter of the roller 13 is too large, the number of rollers 13 on the stop bar 12 will be small, which is not conducive to the transportation of the battery cell. If the diameter of the roller 13 is too small, the battery cell may collide with the stop bar during the transfer process, reducing the production yield of the battery cell. In this embodiment, the diameter e of the roller satisfies: 16 mm ≤ e ≤ 20 mm. Exemplarily, e can be 16 mm, 17 mm, 20 mm, etc., which can not only make the transportation process of the battery cell smoother, but also further improve the production yield of the battery cell.

[0061] Optionally, the conveyor belt assembly 11 includes a first conveyor belt assembly 111 and a second conveyor belt assembly 112. The first conveyor belt assembly 111 and the second conveyor belt assembly 112 are arranged on the bracket 10 at intervals along the first direction X; and the distance d between them along the first direction X satisfies: e ≤ d ≤ e + 5 mm.

[0062] Specifically, the conveyor belt assembly 11 includes a first conveyor belt assembly 111 and a second conveyor belt assembly 112. The first conveyor belt assembly 111 is arranged at the feeding position, and the second conveyor belt assembly 112 is arranged at the discharging position, which can make the battery cells be transported from the feeding position to the discharging position more smoothly. Considering that rollers 13 are also arranged at the end of the first conveyor belt assembly 111 and the beginning of the second conveyor belt assembly 112, the distance between the first conveyor belt assembly 111 and the second conveyor belt assembly 112 is d, and e ≤ d ≤ e + 5 mm. If the distance between the first conveyor belt assembly 111 and the second conveyor belt assembly 112 is too far, it will not only cause the battery cells to be transported between the two conveyor belt assemblies not smoothly, but also may cause friction between the battery cells and the conveyor belt assembly. Therefore, d needs to be as small as possible. In the embodiment of the present application, e ≤ d ≤ e + 5 mm, which can not only make the transportation process of the battery cells more smooth, but also avoid friction between the battery cells and the conveyor belt assembly, so as to prevent damage to the battery cell housing and further improve the production yield of the battery cells.

[0063] Exemplarily, d can be 16 mm, 18 mm, 22 mm, 23 mm, etc.

[0064] Optionally, the battery cell transfer device 1 further includes: a transition roller 14, which is rotatably connected to the bracket 10 and is located between the first conveyor belt assembly 111 and the second conveyor belt assembly 112.

[0065] Specifically, by arranging the transition roller 14 between the first conveyor belt assembly 111 and the second conveyor belt assembly 112, during the transportation of the battery cells between the two conveyor belt assemblies, not only can the transfer process be more smooth, but also the collision between the battery cells and the conveyor belt assembly can be avoided, further extremely improving the production yield of the battery cells.

[0066] Optionally, the battery cell transfer device 1 further includes a cleaning mechanism 15, which is connected to the side of the bracket 10 away from the stop bar 12 and is in contact with the conveyor belt assembly 11; when the conveyor belt assembly 11 drives along the first direction X, the cleaning mechanism 15 cleans the conveyor belt assembly 11 along the first direction X;

[0067] Or, it further includes an electrostatic eliminator 16, which is connected to the bracket 10 and is used to eliminate static electricity.

[0068] Specifically, the cleaning mechanism 15 can be a brush, a clean cloth or other devices that can be used to clean dust. There can be multiple cleaning structures 15, and the specific number can be set according to actual needs. The embodiment of the present application does not make specific limitations in this regard. By arranging the cleaning mechanism 15, during the transportation of the battery cells, the dust on the conveyor belt assembly 11 can be cleaned to avoid the contact between the dust and the battery cells, resulting in poor production of the battery cells, and further improving the production yield of the battery cells.

[0069] Specifically, the static eliminator 16 can be a device capable of removing static electricity, such as an electrostatic ion blower. The static eliminator 16 is connected to the bracket 10 and is disposed above the conveyor belt assembly 12. The number of static eliminators can be multiple, and the specific number can be set according to actual requirements. In the embodiments of the present application, no specific limitation is made thereto. By using the static eliminator 16, static electricity can be eliminated, avoiding the problem of damage to the battery cells caused by static electricity and further improving the production yield of the battery cells.

[0070] Optionally, the first blocking assembly 17 includes a cylinder 170, a guide bearing 171, a blocking roller 172, and a fixing plate 173; the fixing plate 173 is connected to the bracket 10; the cylinder 170 is connected to the fixing plate 173, the guide bearing 171 is movably connected to the fixing plate 173, the blocking roller 172 is connected to the guide bearing 171, and the cylinder 170 is used to drive the fixing plate 173 to move along the third direction Z on the guide bearing 171, so that the blocking roller 172 moves along the third direction Z, where the third direction Z is perpendicular to the first direction X and the second direction Y.

[0071] Specifically, the first blocking assembly 17 is disposed at the feeding position and includes a cylinder 170, a guide bearing 171, a blocking roller 172, and a fixing plate 173. The cylinder 170 drives the fixing plate installed with the blocking roller 172 to move along the third direction along the guide bearing 171. The guide bearing 171 is used to ensure the straightness of the vertical movement of the cylinder 170 driving the blocking roller 172, avoiding jamming and friction, which may cause damage to the cylinder. The blocking roller 172 blocks the battery cell 2 coming from the feeding position. The contact between the blocking roller 13 and the battery cell is a point contact block, and when separating from the surface of the battery cell, it is a rolling separation. Thereby, the contact area and the friction track between the battery cell and the first blocking assembly are reduced, the risk of generating scratches is lowered, and the production yield of the battery cells is further improved.

[0072] The blocking roller 172 can be made of wear-resistant flexible material, so as to reduce the impact force generated on the battery cell when the battery cell contacts the blocking roller 172 instantaneously and improve the production yield of the battery cells. The number of the blocking rollers 172 can be 1, 2, etc. No specific limitation is made thereto in the present application.

[0073] Optionally, the battery cell transfer device further includes a second blocking assembly 18; the second blocking assembly 18 includes a blocking bar 180. The blocking bar 180 is connected to the bracket 10 and is connected to the blocking bar 12. The blocking bar 180 is used to block the battery cell 2 at the discharging position; the second conveying assembly 18 is used to transport the battery cell 2 to the discharging position. When the battery cell 2 rotates to the discharging position and reaches the position of the blocking bar 180, the second conveying assembly stops operating.

[0074] Specifically, the blocking bar 180 is connected to the bracket 10 and is located at the blanking position. The blocking bar 180 can be made of wear-resistant and surface-lubricated material, so as to avoid the collision between the battery cell and the bracket when transporting the battery cell to the blanking position, prevent the surface of the battery cell from being worn, and further improve the production yield of the battery cell.

[0075] The second blocking assembly 18 may further include a limiting block 181. The limiting block 181 is fixedly connected to the blocking bar 12, and the number of the limiting blocks 181 matches the number of the blocking bars 12. The limiting block 18 is used to limit the battery cell when the second conveyor belt assembly 112 is transported to the feeding position, so as to avoid the collision between the battery cell and the blocking bar near the feeding position, and further improve the production yield of the battery cell.

[0076] The embodiment of the present application further provides a battery cell production system, which may specifically include the battery cell transfer device of any of the above embodiments.

[0077] It should be noted that in the embodiment of the present application, the structure of the battery cell transfer device is the same as that of the battery cell transfer device in any of the above embodiments, and its beneficial effects are similar, so details are not described herein.

[0078] In summary, the battery cell transfer device provided by the embodiment of the present application has at least the following advantages: In the embodiment of the present application, by arranging the first blocking assembly 17 at the feeding position, during the process of loading the battery cell, the first blocking assembly 17 can block the battery cell 2 to avoid the collision between the battery cells when there are too many battery cells 2. The first blocking assembly 17 and the battery cell 2 are in point contact through the blocking roller 172. The roller 13 is also used on the blocking bar 12 to avoid the collision contact between the battery cell and the blocking bar when the battery cell 2 is transported on the conveyor belt, thereby improving the production yield of the battery cell. The original surface contact is changed to point contact, and when separating from the surface of the battery cell, it is a rolling separation, so as to reduce the contact area and friction track between the battery cell and the blocking assembly / transmission assembly, reduce the risk of generating scratches on the surface of the battery cell, and further improve the production yield of the battery cell.

[0079] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0080] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery cell transport device for moving a battery cell (2), characterized in that: The battery cell transport device (1) has a material loading position and a material unloading position, and the battery cell transport device (1) comprises: Bracket (10); A first blocking component (17) is arranged on the support (10) and is used to block the battery cell (2) at the feeding position; the first blocking component (17) comprises a blocking roller (172), and when the battery cell (2) is blocked, the blocking roller (172) abuts against the battery cell (2); a conveyor belt assembly (11), the conveyor belt assembly (11) being arranged on the support (10) and extending from the material input position to the material output position, the conveyor belt assembly (11) being used to carry the battery cell (2) and to move the battery cell (2) from the material input position to the material output position; and at least two baffles (12), the baffles (12) being arranged on the bracket (10) and respectively located on both sides of the conveyor belt assembly (11) along the second direction (Y), a plurality of rollers (13) being arranged on one side of the two baffles (12) close to the conveyor belt assembly (11), the plurality of rollers (13) being arranged at intervals along the first direction (X), and the rollers (13) protruding from the surface of the baffles (12) in the direction toward the conveyor belt assembly (11); The first direction (X) is the same as the running direction of the battery cell (2), and the second direction (Y) intersects with the first direction (X).

2. The battery cell transport device according to claim 1, characterized in that: The first blocking assembly (17) further comprises a cylinder (170), a guide bearing (171) and a fixing plate (173); The fixing plate (173) is connected to the bracket (10); The cylinder (170) is connected to the fixed plate (173), the guide bearing (171) is movably connected to the fixed plate (173), and the blocking roller (172) is connected to the guide bearing (171). The cylinder (170) is used to drive the fixed plate (173) to move along a third direction (Z) on the guide bearing (171), so that the blocking roller (172) moves along the third direction (Z), wherein the third direction (Z) is perpendicular to the first direction (X) and the second direction (Y).

3. The battery cell transport device according to claim 1, characterized in that: The distance between two adjacent rollers (13) on the blocking bar (12) (12) along the first direction (X) is b, and b satisfies: 25mm≤b≤110mm.

4. The battery cell transport device according to claim 1, characterized in that: The protruding distance of the roller (13) from the surface of the blocking bar (12) in the direction of the conveyor belt assembly (11) is c, and c satisfies: 2mm≤c≤3mm.

5. The battery cell transport device according to any one of claims 1 to 4, characterized in that: The diameter of the roller (13) is e, and e satisfies: 16mm≤e≤20mm.

6. The battery cell transport device according to claim 5, characterized in that: The conveyor belt assembly (11) comprises a first conveyor belt assembly (111) and a second conveyor belt assembly (112), wherein the first conveyor belt assembly (111) and the second conveyor belt assembly (112) are arranged on the bracket (10) at intervals along the first direction (X); and the distance between them along the first direction (X) is d, and d satisfies: e≤d≤e+5mm.

7. The battery cell transport device according to claim 6, characterized in that: The battery cell transport device (1) further comprises: a transition roller (14), wherein the transition roller (14) is rotatably connected to the bracket (10) and is located between the first conveyor belt assembly (111) and the second conveyor belt assembly (112).

8. The battery cell transport device according to claim 1, characterized in that: The battery cell transport device (1) further comprises a cleaning mechanism (15), wherein the cleaning mechanism (15) is connected to a side of the support (10) away from the blocking bar (12) and in contact with the conveyor belt assembly (11); when the conveyor belt assembly (11) is transmitted along the first direction (X), the cleaning mechanism (15) cleans the conveyor belt assembly (11) along the first direction (X); Alternatively, it further comprises a static eliminator (16), wherein the static eliminator (16) is connected to the bracket (10), and the static eliminator (16) is used to eliminate static electricity.

9. The battery cell transport device according to claim 6, characterized in that: The battery cell transport device also includes a second blocking component (18); The second blocking component (18) comprises a blocking bar (180), the blocking bar (180) being connected to the bracket (10), and the blocking bar (180) being used to block the battery cell (2) at the material lowering position; The second conveyor belt assembly (112) is used to transport the battery cell (2) to the unloading position. When the battery cell (2) moves to the unloading position and reaches the position of the blocking bar (180), the second conveyor belt assembly (112) stops running.

10. A battery cell production system, characterized in that: It comprises a battery cell transport device as described in any one of claims 1 to 9.

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