Device for centrifugally loading lithium battery cell into shell

Abstract

The utility model discloses a device for centrifugally loading a lithium cell into a shell, which comprises a turntable assembly and a fixing assembly, the turntable assembly comprises a turntable and a turntable driving part for driving the turntable to rotate, the fixing assembly comprises a pressing plate, a pressing plate driving part for driving the pressing plate and a guide plate, and the guide plate is fixed on the turntable and is used for guiding the lithium cell. The pressing plate is arranged at the rotating disc and can tightly press the battery cell shell, and the front part of the lithium battery cell extends into the battery cell shell; and the turntable driving part can drive the turntable to rotate so as to completely throw the lithium battery core into the battery core shell. According to the utility model, the automatic shell entering of the battery cell is realized, manual participation is not needed, a certain labor force is saved, the shell entering consistency can be ensured, the shell entering precision is high, the shell entering requirements of different types of battery cells can be met, and the influence of uncertain factors caused by excessive manual participation on the battery cell is avoided.

Description

Technical Field

[0001] The utility model relates to a lithium battery, in particular to a centrifugal shelling device for a lithium battery core. Background Art

[0002] During lithium battery manufacturing, the bare cell, after the laminations and tabs have been welded, needs to be loaded into the cell casing. Because the cell and casing fit tightly together, external force is required to fully insert the cell into the casing. The front half of the cell can be inserted by clamping the cell's upper wide surface into a guide mold, but this method cannot be used for the back half. When inserting the back half of the cell, pushing the top of the cell into the casing can cause damage to the cell's top cover and tabs, impacting battery performance.

[0003] The current production process primarily relies on manual labor: the front half of the battery cell is first manually inserted into the casing. The back half is then manually lifted and gently vibrated on a work surface to fully insert the cell. This method is inefficient and introduces certain uncertainties. Furthermore, manually vibrating the battery casing on the tabletop also poses a risk to the battery due to contact with the work surface. Utility Model Content

[0004] In order to solve the defects of the above-mentioned prior art, the utility model provides a centrifugal shelling device for lithium battery cells. The utility model realizes automatic shelling of battery cells without manual participation, saving a certain amount of labor. At the same time, it can ensure the consistency of shelling and high shelling accuracy. It can match the shelling requirements of different models of battery cells and avoid the impact of uncertainties caused by excessive human participation on the battery cells.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solutions: a device for centrifugal shelling of lithium battery cells, comprising a turntable assembly and a fixed assembly, wherein the turntable assembly comprises a turntable and a turntable drive unit for driving the turntable to rotate, the fixed assembly comprises a pressure plate, a pressure plate drive unit for driving the pressure plate, and a guide plate, the guide plate is fixed to the turntable for guiding the lithium battery cells, the pressure plate is arranged at the turntable and can press the battery cell shell, wherein the front part of the lithium battery cell has extended into the battery cell shell; the turntable drive unit can drive the turntable to rotate to completely throw the lithium battery cell into the battery cell shell.

[0006] The turntable assembly also includes a supporting base, and the turntable driving unit includes a rotating motor and a rotating support structure. The rotating motor is installed at the lower part of the supporting base, and the rotating support structure is installed at the supporting base and connected to the turntable for driving the turntable to rotate.

[0007] The pressing plate driving part adopts a pressing plate cylinder. The pressing plate includes a vertical plate and a horizontal plate. The vertical plate passes through the turntable and the lower end is connected to the pressing plate cylinder. The horizontal plate can fit and press the battery cell shell.

[0008] It also includes a counterweight assembly, which includes front and rear baffles, a spring guide rod, and an elastic moving block. The front and rear baffles are fixed on the turntable, and the two ends of the spring guide rod are respectively fixed to the front and rear baffles. The elastic moving block is passed through the spring guide rod and can move forward and backward.

[0009] The counterweight assembly also includes a tooth plate, a tooth piece, and a fixed rod. The fixed rod is fixed to the elastic movable block. The tooth piece is passed through the fixed rod and can move up and down along the fixed rod. The tooth plate is fixed to the turntable. The tooth plate has a gap, and the tooth piece is facing the gap. It also includes a reset cylinder. The driving rod of the reset cylinder can extend to the gap to lift the tooth piece away from the tooth plate.

[0010] It also includes a stop assembly, which includes a bracket and a stop cylinder. The stop cylinder is fixed to the bracket, and the extension rod of the stop cylinder can extend into the pin shaft hole of the turntable and be fixed by the pin shaft.

[0011] In summary, the present invention has achieved the following technical effects:

[0012] Considering that incorrect external forces may affect the performance of the battery cell, the centrifugal shell-feeding device rotates the battery cell and relies on the centrifugal force of the battery cell itself during rotation to completely send the battery cell into the shell, effectively improving the efficiency and consistency of battery cell shell insertion and avoiding the uncertain impact of additional external forces on the battery cell.

[0013] The utility model uses a servo motor to drive a turntable to place the battery cell to be fully inserted into the shell at a specified position on the turntable. By controlling the acceleration and deceleration of the motor, the turntable is accelerated from static to slow, then to fast, and finally reaches the specified speed. The centrifugal force generated by the rotation of the battery cell itself completely pushes the battery cell into the bottom of the shell, thereby achieving the purpose of fully inserting the battery cell into the shell.

[0014] This utility model's counterweight assembly is used to match the turntable's overall center of gravity, preventing vibration during rotation caused by eccentricity. Furthermore, an elastic moving block is mounted on the counterweight assembly. During rotation, as centrifugal force increases, the elastic moving block moves to match the center of gravity shift caused by the movement of the opposite battery cell, thereby achieving dynamic balance during rotation and improving the turntable's stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the use of a centrifugal shelling device for lithium batteries;

[0016] Figure 2 yes Figure 1 Internal schematic diagram. DETAILED DESCRIPTION

[0017] The present invention will be described in further detail below with reference to the accompanying drawings.

[0018] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation to the present invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0021] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, 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 specific circumstances.

[0022] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0023] Example:

[0024] Figure 1 This is a schematic diagram of the use of a lithium battery core centrifugal shell device. Figure 2 yes Figure 1 The internal schematic diagram includes a turntable assembly and a fixed assembly. The turntable assembly includes a turntable 11 and a turntable drive unit that drives the turntable 11 to rotate. The fixed assembly includes a pressure plate 21, a pressure plate drive unit that drives the pressure plate 21, and a guide plate 22. The guide plate 22 is fixed to the turntable 11 for guiding the lithium battery cell 5. The pressure plate 21 is provided at the turntable 11 and can press the battery cell housing 4, wherein the front part of the lithium battery cell 5 has extended into the battery cell housing 4; the turntable drive unit can drive the turntable 11 to rotate to completely throw the lithium battery cell 5 into the battery cell housing 4.

[0025] The utility model integrates the half-shelled lithium battery core and the battery core shell structure as a whole and installs them on a turntable. The rotating centrifugal force of the turntable is used to fully shell the lithium battery core. Manual shelling is unnecessary, the operation is simple, and the lithium battery core will not be damaged.

[0026] The utility model uses a servo motor to drive a turntable, placing the battery cell to be fully inserted into the shell at a specified position on the turntable. By controlling the acceleration and deceleration of the motor, the turntable is accelerated from static to slow, then to fast, and finally reaches the specified speed. The centrifugal force generated by the rotation of the battery cell itself completely pushes the battery cell into the bottom of the shell, thereby achieving the purpose of fully inserting the battery cell into the shell.

[0027] The turntable assembly also includes a support base 14, and the turntable drive unit includes a rotating motor 15 and a rotating support structure. The rotating motor 15 is installed at the lower part of the support base 14, and the rotating support structure is installed at the support base 14 and connected to the turntable 11 to drive the turntable 11 to rotate. The connection relationship between the rotating support structure, the turntable and the motor is a prior art and will not be repeated here. The turntable speed can be adjusted and controlled by the stepless speed change of the motor, thereby achieving control of the centrifugal force of the battery cell and matching the shell requirements of different processes or different models of battery cells.

[0028] The pressing plate drive unit utilizes a pressing plate cylinder 23. The pressing plate 21 comprises a vertical plate and a horizontal plate. The vertical plate extends through the turntable 11 and is connected to the pressing plate cylinder 23 at its lower end. The horizontal plate is adapted to press the cell casing 4. A fixing assembly is used to position and clamp the cell casing to prevent the cell from being thrown out during rotation. It also guides the cell cover to prevent it from swaying during rotation.

[0029] The balancing weight assembly further includes a counterweight assembly, which includes front and rear baffles 61, a spring guide rod 62, and an elastic movable block 63. The front and rear baffles 61 are fixed to the turntable 11, and the two ends of the spring guide rod 62 are respectively fixed to the front and rear baffles 61. The elastic movable block 63 is inserted through the spring guide rod 62 and can move forward and backward. The balancing weight assembly further includes a tooth plate 66, a tooth piece 65, and a fixed rod 64. The fixed rod 64 is fixed to the elastic movable block 63. The tooth piece 65 is inserted through the fixed rod 64 and can move up and down along the fixed rod 64. The tooth plate 66 is fixed to the turntable 11 and has a slit 67 defined therein, with the tooth piece 65 facing the slit 67. The balancing weight assembly further includes a reset cylinder 68, the driving rod of which can extend into the slit 67 to lift the tooth piece 65 off the tooth plate 66. When stopped, the reset cylinder 68 extends out and pushes the tooth piece 65 up from the gap 67, so that the tooth piece 65 leaves the tooth plate 66. The two are no longer engaged with each other, and the elastic moving block 63 is reset under the action of the spring guide rod.

[0030] The counterweight assembly is used to match the turntable's center of gravity, preventing vibration during rotation caused by eccentricity. A resilient moving block is also mounted on the counterweight assembly. As centrifugal force increases during rotation, the resilient moving block shifts slightly to match the center of gravity shift caused by the movement of the opposite battery cell, thereby achieving dynamic balance during rotation and improving the turntable's stability.

[0031] The system also includes a stop assembly, comprising a bracket 31 and a stop cylinder 32. The stop cylinder 32 is secured to the bracket 31. The extension rod of the stop cylinder 32 can be inserted into the pin hole of the turntable 11 and secured with the pin, thereby completely stopping the turntable. The stop assembly positions the turntable, ensuring that its start and stop positions remain consistent, facilitating automated loading and unloading of battery cells.

[0032] When the turntable stops from high speed, the speed of the motor is controlled to slowly decelerate the turntable. When the speed drops to the set value, the sensor that senses the fixed position stops the turntable at a fixed position.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A centrifugal shelling device for lithium battery cells, characterized by: The invention comprises a turntable assembly and a fixing assembly, wherein the turntable assembly comprises a turntable (11) and a turntable driving unit for driving the turntable (11) to rotate, the fixing assembly comprises a pressing plate (21), a pressing plate driving unit for driving the pressing plate (21) and a guide plate (22), the guide plate (22) being fixed to the turntable (11) for guiding the lithium battery cell (5), the pressing plate (21) being arranged at the turntable (11) and being capable of pressing the battery cell shell (4), wherein the front portion of the lithium battery cell (5) has been extended into the battery cell shell (4); the turntable driving unit is capable of driving the turntable (11) to rotate so as to completely throw the lithium battery cell (5) into the battery cell shell (4).

2. The lithium battery core centrifugal shelling device according to claim 1, characterized in that: The turntable assembly further comprises a supporting base (14); the turntable driving unit comprises a rotating motor (15) and a rotating support structure; the rotating motor (15) is mounted on the lower portion of the supporting base (14); the rotating support structure is mounted on the supporting base (14) and connected to the turntable (11) for driving the turntable (11) to rotate.

3. The centrifugal shelling device for lithium battery cells according to claim 2, characterized in that: The pressing plate driving part adopts a pressing plate cylinder (23), the pressing plate (21) has a vertical plate and a horizontal plate, the vertical plate passes through the turntable (11) and the lower end is connected to the pressing plate cylinder (23), and the horizontal plate can fit and press the battery cell shell (4).

4. The lithium battery core centrifugal shelling device according to claim 1, characterized in that: The invention also includes a counterweight assembly, which includes front and rear baffles (61), a spring guide rod (62), and an elastic moving block (63). The front and rear baffles (61) are fixed on the turntable (11), and both ends of the spring guide rod (62) are respectively fixed to the front and rear baffles (61). The elastic moving block (63) is inserted into the spring guide rod (62) and can move forward and backward.

5. The device for centrifugal shelling of lithium battery cells according to claim 4, characterized in that: The counterweight assembly further comprises a tooth plate (66), a tooth piece (65), and a fixed rod (64), wherein the fixed rod (64) is fixed to the elastic movable block (63), the tooth piece (65) is passed through the fixed rod (64) and can move up and down along the fixed rod (64), the tooth plate (66) is fixed to the turntable (11), the tooth plate (66) is provided with a slit (67), and the tooth piece (65) is directly opposite to the slit (67); and further comprises a reset cylinder (68), the driving rod of the reset cylinder (68) can extend to the slit (67) to lift the tooth piece (65) away from the tooth plate (66).

6. The lithium battery core centrifugal shelling device according to claim 1, characterized in that: The invention also includes a stop assembly, which includes a bracket (31) and a stop cylinder (32). The stop cylinder (32) is fixed to the bracket (31), and the extension rod of the stop cylinder (32) can extend into the pin shaft hole of the turntable (11) and be fixed by the pin shaft.

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