Battery cell polarity adjusting device and battery module assembly production line

Abstract

The utility model belongs to the technical field of battery manufacturing, and discloses a battery cell polarity adjusting device and a battery module assembly production line. The battery cell polarity adjusting device comprises a base, a material taking seat, a material taking piece and a driving mechanism, the material taking seat is arranged on the base in a sliding or rotating mode, and the material taking seat can be close to and away from a battery cell; at least one group of material taking pieces are arranged on the material taking seat, at least two material taking pieces are arranged in one group, the material taking pieces are rotationally connected to the material taking seat through a rotating shaft, the axis of the rotating shaft is perpendicular to the plane, where electrodes are arranged, of the battery cell, and the material taking pieces can pick up the battery cell; the driving mechanism is arranged on the material taking base and can drive part of the material taking pieces or all the material taking pieces in the set of material taking pieces to rotate. According to the cell polarity adjusting device, a plurality of cells can be picked up in batches, and the cells of which the polarity needs to be adjusted are turned over, so that the positions of the positive electrodes and the negative electrodes on the cells are exchanged, and finally, the battery production rhythm is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, and in particular to a battery core polarity adjustment device and a battery module assembly production line. Background Art

[0002] A battery cell refers to a single battery containing positive and negative electrodes. Multiple battery cells can be assembled in series or parallel to form a battery module to provide higher voltage or larger capacity to meet the power requirements of specific applications.

[0003] There is a square battery cell with its positive and negative poles on the same plane. During the automated production of battery modules, the battery cells without distinguishing between positive and negative poles are placed one by one on a conveyor line for transportation, and then stacked and welded in sequence to form a battery module.

[0004] Since the battery cells arranged on the conveyor line will be connected in series or parallel later, the positive and negative poles of the battery cells on the conveyor line must be arranged according to a certain pattern. Currently, the polarity of the battery cells is detected by detection equipment during the conveying process, and the battery cells that need to be adjusted in polarity are manually flipped to swap the positive and negative poles of the battery cells. This not only consumes a lot of physical energy, but also only a single battery cell can be flipped manually at a time, affecting the production rhythm. Utility Model Content

[0005] The purpose of the utility model is to provide a battery cell polarity adjustment device and a battery module assembly production line, so as to adjust the polarity of battery cells in batches, thereby achieving the effect of speeding up the production cycle.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A cell polarity adjustment device, used to flip the cell to adjust the polarity of the cell, the cell polarity adjustment device comprising:

[0008] base;

[0009] A material taking seat, which is slidably or rotatably arranged on the base, and can be close to or away from the battery core;

[0010] A picking piece, wherein at least one group of the picking pieces is provided on the picking seat, and each group of the picking pieces is provided with at least two picking pieces, the picking piece is rotatably connected to the picking seat via a rotating shaft, the axis of the rotating shaft is perpendicular to the plane on which the electrodes of the battery cell are provided, and the picking piece is capable of picking up the battery cell; and

[0011] A driving mechanism is provided on the material picking seat, and the driving mechanism can drive some or all of the material picking members in a group of the material picking members to rotate.

[0012] Preferably, the material taking seat is slidably arranged on the base, and the material taking seat slides in a vertical direction.

[0013] Preferably, the driving mechanism comprises:

[0014] A driving rack, wherein the driving rack is slidably arranged on the material picking seat, the sliding direction of the driving rack is perpendicular to the axial direction of the rotating shaft, the length direction of the driving rack is perpendicular to the axial direction of the rotating shaft, and at least two driving racks are arranged in parallel;

[0015] A first driving member, the first driving member is arranged on the material picking seat, and the first driving member can drive all the driving racks to slide simultaneously;

[0016] A driving gear is provided on the outside of each of the rotating shafts, and the driving gear is capable of rotating synchronously with the rotating shaft. The driving racks are provided in a one-to-one correspondence with the driving gears; and

[0017] A second driving member is provided for each of the driving gears, and the second driving member is used to drive the driving gear to slide along the axial direction of the rotating shaft, so that the driving gear has a first working state of meshing with the driving rack and a second working state of exiting meshing with the driving rack.

[0018] Preferably, all the driving racks are connected by a connecting member, and the output shaft of the first driving member is connected to the connecting member.

[0019] Preferably, the driving rack is detachably connected to the connecting member.

[0020] Preferably, a mounting plate is provided on one side of the material picking seat, the rotating shaft is rotatably connected to the mounting plate, the second driving member is provided on the material picking seat, and the output shaft of the second driving member is rotatably connected to the driving gear.

[0021] Preferably, the mounting plate is arranged in parallel with the material taking seat, and a connecting plate is provided between the mounting plate and the material taking seat.

[0022] Preferably, the material taking component includes:

[0023] a double-headed cylinder connected to the rotating shaft; and

[0024] A clamping claw is connected to each of the two piston rods of the double-headed cylinder.

[0025] Preferably, a positioning groove is provided on one side of the two clamping jaws that are close to each other, and a portion of the battery cell can be embedded in the positioning groove.

[0026] Battery module assembly production line, including battery cell polarity adjustment device.

[0027] Beneficial effects of the utility model:

[0028] The battery cell polarity adjustment device of the present invention can drive the movement of the picking piece through the picking seat, so that multiple picking pieces can pick up battery cells in batches, and then flip one or more battery cells that need to adjust the electrode polarity according to the results of the electrode detection of the battery cells. During the flipping operation, the corresponding picking piece is driven by the driving mechanism to rotate 180° around the axis of the rotating shaft, so that the battery cells are synchronously flipped and rotated 180°, so that the positions of the positive and negative poles on the battery cells are interchanged, thereby realizing the polarity adjustment of the battery cells, and finally achieving the purpose of adjusting the polarity of battery cells in batches, thereby speeding up the battery production rhythm. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is one of the structural diagrams of the battery cell polarity adjustment device of the present utility model;

[0030] Figure 2 This is the second structural diagram of the battery cell polarity adjustment device of the present invention;

[0031] Figure 3 It is a structural diagram of the driving mechanism of the utility model.

[0032] In the picture:

[0033] 100. Battery cell; 200. Conveyor line; 1. Base; 2. Material picker; 21. Mounting plate; 22. Connecting plate; 3. Material picker; 31. Double-head cylinder; 32. Gripper; 321. Positioning slot; 4. Driving mechanism; 41. Driving rack; 411. Connecting member; 42. First driving member; 43. Driving gear; 44. Second driving member. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0035] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0036] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0038] Refer to the following Figures 1 to 3 The battery cell polarity adjustment device and battery module assembly production line provided by the present invention are described.

[0039] The battery module assembly production line includes a conveyor line 200, a polarity detection device (not shown in the figure), a battery cell polarity adjustment device and a battery module assembly device (not shown in the figure). The conveyor line 200 is any conveyor line in the prior art. The specific structure is the prior art and will not be repeated here. The conveying direction of the conveyor line 200 is horizontal. The battery cell 100 on the conveyor line 200 is in a horizontal state, and the plane where the two electrodes are located is a vertical plane and is parallel to the conveying direction of the conveyor line 200.

[0040] The polarity detection device is located on one side of the conveyor line 200 and is used to detect the polarity of the battery cell 100 on the conveyor line 200. The polarity detection device is any device in the prior art that can detect the polarity of the battery cell 100. The specific structure is the prior art and is not the invention point of this application, so it will not be repeated here; the battery module assembly device is any device in the prior art that can assemble battery modules. The specific structure is the prior art and is not the invention point of this application, so it will not be repeated here.

[0041] The battery cell polarity adjustment device of the present invention is arranged on one side of the conveyor line 200 of the battery cell 100 and is located downstream of the polarity detection device of the battery cell 100. The battery cell polarity adjustment device is intended to pick up battery cells 100 in batches and flip one or more battery cells 100 that need to adjust the electrode polarity so that the positions of the positive and negative poles of the battery cells 100 are interchanged, thereby facilitating the subsequent stacking operation of the battery cells 100 and improving the production rhythm of the battery pack. Please refer to the following content for the specific structure of the battery cell polarity adjustment device.

[0042] Reference Figure 1 The battery cell polarity adjustment device includes a base 1, a material picking seat 2, a material picking piece 3 and a driving mechanism 4. The base 1 is connected to one side of the conveyor line 200. The material picking seat 2 is arranged on the base 1 and can be close to the battery cell 100 and away from the battery cell 100; at least one group of material picking pieces 3 is arranged on the material picking seat 2, and each material picking piece 3 is rotatably connected to the material picking seat 2 through a rotating shaft, and the material picking piece 3 can pick up the battery cell 100; the driving mechanism 4 is arranged on the material picking seat 2, and the driving mechanism 4 can drive some of the material picking pieces 3 in a group of material picking pieces 3 to rotate or all of the material picking pieces 3 to rotate.

[0043] Furthermore, the pick-up seat 2 is slidably or rotatably mounted on the base 1. In this embodiment, the pick-up seat 2 is vertically slidably connected to the base 1. The pick-up seat 2 is located above the conveyor line 200. The sliding movement of the pick-up seat 2 is driven by a linear drive member such as a pneumatic cylinder, an oil cylinder, or an electric cylinder. In this embodiment, a pneumatic cylinder is used as an example. A linear guide rail is used between the base 1 and the pick-up seat 2 for guidance and position limiting. When the pick-up seat 2 slides downward in the vertical direction, it facilitates the pick-up member 3 to pick up the battery cells 100 on the conveyor line 200.

[0044] It should be noted that, in some other embodiments, the sliding direction of the material picking seat 2 can also be changed to a direction that forms a certain angle with the horizontal plane, such as a direction that forms a 60° angle between horizontal planes; or, the material picking seat 2 can be rotatably connected to the base 1, and the axis of rotation is parallel to the conveying direction of the battery cell 100, so that the material picking seat 2 can be close to the battery cell 100 and away from the battery cell 100.

[0045] Reference Figure 2For example, in this embodiment, two groups of picker elements 3 are provided along the conveying direction of the battery cells 100, with two picker elements 3 in each group. A mounting plate 21 is provided on one side of the picker seat 2, one mounting plate 21 corresponding to each group of picker elements 3. In this embodiment, two mounting plates 21 are provided. In this embodiment, the mounting plates 21 are arranged parallel to the picker seat 2. A connecting plate 22 is connected between the mounting plates 21 and the picker seat 2. Multiple connecting plates 22 are provided in parallel. In other embodiments, the mounting plates 21 can be directly provided in an L-shape or U-shape, thereby eliminating the connecting plates 22.

[0046] Each material-removing member 3 is rotatably connected to the mounting plate 21 via a rotating shaft (not shown in the figure). Specifically, each material-removing member 3 in this embodiment includes a double-headed cylinder 31 and a clamping jaw 32. The double-headed cylinder 31 is connected to the rotating shaft, which rotatably penetrates the mounting plate 21. The axis of the rotating shaft is horizontally arranged and perpendicular to the conveying direction of the battery cell 100, that is, the axis of the rotating shaft is perpendicular to the plane on which the electrodes are arranged on the battery cell 100. A clamping jaw 32 is connected to each of the two piston rods of the double-headed cylinder 31. In this embodiment, the two clamping jaws 32 are distributed along a direction parallel to the conveying direction of the battery cell 100, and a positioning groove 321 is provided on the side where the two clamping jaws 32 are close to each other. The positioning groove 321 can allow the battery cell 100 to be partially embedded.

[0047] Based on the above, when the material picking component 3 clamps the battery cell 100 and rises to a certain height, if the rotating shaft is driven to rotate, the battery cell 100 can be driven to rotate along the axial direction of the rotating shaft. Since the axial direction of the rotating shaft is perpendicular to the plane where the electrodes are located, that is, after the battery cell 100 rotates 180°, the positions of the positive and negative poles on the battery cell 100 are interchanged, thereby completing the adjustment of the polarity of the battery cell 100.

[0048] Optionally, in some other embodiments, the picking member 3 may also be a suction cup or a pneumatic clamp 32 or other component capable of picking up the battery cell 100 , without limitation.

[0049] Reference Figure 2 and Figure 3 The driving mechanism 4 includes a driving rack 41, a first driving member 42, a driving gear 43 and a second driving member 44. The driving rack 41 is slidably arranged on the material picking seat 2. The sliding direction of the driving rack 41 is perpendicular to the axial direction of the rotating shaft. The length direction of the driving rack 41 is perpendicular to the axial direction of the rotating shaft. There are at least two driving racks 41 arranged in parallel. This embodiment takes two as an example, and the driving rack 41 in this embodiment slides in the vertical direction.

[0050] Furthermore, the first driving member 42 is arranged on the material picking seat 2, and the first driving member 42 can drive all the driving racks 41 to slide simultaneously. For example, all the driving racks 41 in this embodiment are connected by a connecting member 411, and the connecting member 411 is arranged in a plate shape. The connecting member 411 is slidably connected to the material picking seat 2, and the connecting member 411 and the material picking seat 2 are guided and limited by a linear guide rail. The opposite sides of the two driving racks 41 are connected to the connecting member 411, so that the driving racks 41 are fixedly connected to the connecting plate 22; the first driving member 42 is a cylinder, and the output shaft of the first driving member 42 is connected to the connecting member 411, that is, the piston rod of the cylinder is connected to the connecting member 411. When the piston rod of the cylinder is extended or retracted, all the driving racks 41 can be synchronously driven to rotate through the connecting member 411.

[0051] In some other embodiments, the first driving member 42 may also be a linear driving member such as a hydraulic cylinder or an electric cylinder; and the connecting member 411 may also be arranged in a strip shape and placed at the top of the driving rack 41. This structure facilitates increasing the number of driving racks 41.

[0052] Preferably, the driving rack 41 and the connecting member 411 in this embodiment are detachably connected by bolts, so as to facilitate the replacement of the driving rack 41 to replace a damaged or different specification driving rack 41. In some other embodiments, the detachable connection can also be achieved by screws, and the specific method is not limited.

[0053] In addition, a driving gear 43 is provided with a sliding sleeve on the outside of each rotating shaft, and two driving racks 41 are arranged in a one-to-one correspondence with the two driving gears 43. The driving gear 43 can rotate synchronously with the rotating shaft. Specifically in this embodiment, the driving gear 43 and the rotating shaft are circumferentially limited by a key, such as a flat key, a spline, etc., so that the driving gear 43 and the rotating shaft can rotate synchronously.

[0054] A second driving member 44 is provided for each driving gear 43. The second driving member 44 is used to drive the driving gear 43 to slide axially along the rotating shaft, so that the driving gear 43 has a first working state in which it is engaged with the driving rack 41 and a second working state in which it is out of engagement with the driving rack 41. Specifically, in this embodiment, the second driving member 44 is a cylinder. The output shaft of the second driving member 44 slides through the material picking seat 2 and is rotationally connected to the driving gear 43. That is, the piston rod of the cylinder slides through the material picking seat 2 and is rotationally connected to the driving gear 43.

[0055] Based on the above, when the output shaft of the second driving member 44 is extended or retracted, it can directly drive the gear to slide along the axial direction of the rotating shaft. When the driving gear 43 slides to engage with the driving rack 41, the driving gear 43 is in the first working state. At this time, when the driving rack 41 slides, it can drive the driving gear 43 to rotate, thereby realizing the flipping of the battery cell 100 and swapping the positions of the positive and negative poles on the battery cell 100. When the driving gear 43 slides to exit the meshing with the driving rack 41, the driving gear 43 is in the second working state. At this time, when the driving rack 41 slides, the driving gear 43 does not rotate, and the battery cell 100 maintains the current state, that is, the positions of the positive and negative poles on the battery cell 100 are inconvenient.

[0056] It should be noted that the friction force of the rotational connection between the output shaft of the second driving member 44 and the driving gear 43 can overcome the gravity of the battery cell 100 itself, that is, after the driving gear 43 exits the engagement, the rotating shaft will not rotate under the action of the gravity of the battery cell 100, so as to change the posture of the battery cell 100.

[0057] Optionally, in some other embodiments, the output shaft of the second driving member 44 may be set on one side of the rotating shaft, and a shift fork is connected to the output shaft of the second driving member 44, and the drive gear 43 is driven to slide along the axial direction of the rotating shaft through the shift fork.

[0058] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A cell polarity adjustment device, used for flipping a cell (100) to adjust the polarity of the cell (100), characterized in that: The battery cell polarity adjustment device comprises: Base (1); A material taking seat (2), the material taking seat (2) being slidably or rotatably arranged on the base (1), and the material taking seat (2) being capable of approaching the battery core (100) and moving away from the battery core (100); A material picking member (3), wherein at least one group of the material picking members (3) is provided on the material picking seat (2), and a group of the material picking members (3) is provided with at least two members, the material picking members (3) are rotatably connected to the material picking seat (2) via a rotating shaft, the axis of the rotating shaft is perpendicular to the plane on which the electrodes of the battery cell (100) are provided, and the material picking member (3) is capable of picking up the battery cell (100); and A driving mechanism (4) is provided on the material picking seat (2), and the driving mechanism (4) is capable of driving some of the material picking members (3) in a group of the material picking members (3) to rotate or all of the material picking members (3) to rotate.

2. The battery cell polarity adjustment device according to claim 1, characterized in that: The material taking seat (2) is slidably arranged on the base (1), and the material taking seat (2) slides in a vertical direction.

3. The battery cell polarity adjustment device according to claim 1, characterized in that: The driving mechanism (4) comprises: A driving rack (41), wherein the driving rack (41) is slidably arranged on the material picking seat (2), the sliding direction of the driving rack (41) is perpendicular to the axial direction of the rotating shaft, the length direction of the driving rack (41) is perpendicular to the axial direction of the rotating shaft, and at least two driving racks (41) are arranged in parallel; A first driving member (42), the first driving member (42) being arranged on the material taking seat (2), and the first driving member (42) being capable of driving all the driving racks (41) to slide simultaneously; A driving gear (43) is provided on the outside of each of the rotating shafts in a sliding manner. The driving gear (43) can rotate synchronously with the rotating shaft. The driving rack (41) and the driving gear (43) are provided in a one-to-one correspondence; and A second driving member (44) is provided for each driving gear (43), and the second driving member (44) is used to drive the driving gear (43) to slide along the axial direction of the rotating shaft, so that the driving gear (43) has a first working state of meshing with the driving rack (41) and a second working state of exiting meshing with the driving rack (41).

4. The battery cell polarity adjustment device according to claim 3, characterized in that: All the driving racks (41) are connected via a connecting member (411), and the output shaft of the first driving member (42) is connected to the connecting member (411).

5. The battery cell polarity adjustment device according to claim 4, characterized in that: The driving rack (41) is detachably connected to the connecting member (411).

6. The battery cell polarity adjustment device according to claim 3, characterized in that: A mounting plate (21) is provided on one side of the material picking seat (2), the rotating shaft is rotatably connected to the mounting plate (21), the second driving member (44) is provided on the material picking seat (2), and the output shaft of the second driving member (44) is rotatably connected to the driving gear (43).

7. The battery cell polarity adjustment device according to claim 6, characterized in that: The mounting plate (21) is arranged in parallel with the material taking seat (2), and a connecting plate (22) is provided between the mounting plate (21) and the material taking seat (2).

8. The battery cell polarity adjustment device according to any one of claims 1 to 7, characterized in that: The material taking member (3) comprises: a double-headed cylinder (31), the double-headed cylinder (31) being connected to the rotating shaft; and A clamping claw (32) is connected to each of the two piston rods of the double-headed cylinder (31).

9. The battery cell polarity adjustment device according to claim 8, characterized in that: A positioning groove (321) is provided on one side of the two clamping jaws (32) that are close to each other, and a portion of the battery core (100) can be embedded in the positioning groove (321).

10. Battery module assembly production line, characterized in that: It comprises the battery cell polarity adjustment device as described in any one of claims 1 to 9.

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