A lithium battery cell infiltration device

Abstract

This utility model relates to a lithium battery cell wetting device, belonging to the field of lithium battery cell wetting technology. It includes a base, with a housing at the top of the base. A rotating groove is provided inside the housing, and a rotating cylinder is rotatably connected to the rotating groove. A motor is located on one side of the housing to drive the rotating cylinder. Several placement frames are evenly distributed inside the rotating cylinder, and each placement frame is driven to rotate by a second motor. Each placement frame has an opening on one side and a limiting mechanism for positioning the lithium battery within it. This patent, by using a first motor to rotate the rotating cylinder, and a second motor to rotate the lithium battery within the placement frames, allows for horizontal and vertical rotation of the lithium battery during the cell wetting process. This results in a uniform wetting effect and more comprehensively promotes the flow and distribution of the electrolyte.

Description

Technical Field

[0001] This utility model relates to a lithium battery cell wetting device, belonging to the field of lithium battery cell wetting technology. Background Technology

[0002] Lithium-ion batteries are rechargeable secondary batteries with advantages such as high energy density, long cycle life, low self-discharge rate, and no memory effect. They are widely used in electronic products, electric vehicles, energy storage systems, and other fields. Cell wetting refers to the distribution and penetration of electrolyte within the cell, including the positive electrode, negative electrode, and separator. Good wetting ensures that the electrolyte is evenly distributed within the cell, thereby improving battery performance, consistency, and safety.

[0003] In current technologies, the immersion of lithium batteries is not only time-consuming and inefficient, but also produces poor results. A search revealed CN2158986U, which discloses a lithium battery immersion device including an immersion tank, a sealing cover, and a handle. The immersion tank has an immersion chamber inside and an opening at its upper end. A rotary motor drives a placement box and the lithium battery fixed inside the box to rotate via a shaft. The continuous rotation of the lithium battery causes the electrolyte inside the battery to slosh around at a uniform speed, flowing outwards to immerse the battery cell. This ensures the electrolyte "uniformly" immerses the battery cell, improving the performance of the lithium-ion battery.

[0004] However, when using this device, it can only rotate the lithium battery horizontally, which causes the electrolyte above the lithium battery to flow downwards. At this time, the upper and lower parts of the cell may not get the same wetting effect: the upper part may be insufficiently wetted due to the flow of electrolyte, while the lower part may be over-wetted due to the accumulation of electrolyte. This seriously affects the uniformity of cell wetting. Summary of the Invention

[0005] The technical problem this invention aims to solve is that when the lithium battery cell wetting device is in use, it can only rotate the lithium battery horizontally. This causes the electrolyte above the lithium battery to flow downwards, and the upper and lower parts of the cell may not obtain the same wetting effect, which seriously affects the uniformity of cell wetting.

[0006] To address the aforementioned problems, this utility model provides a lithium battery cell immersion device, comprising a base, a housing at the upper end of the base, a rotating groove inside the housing, a rotating cylinder rotatably disposed within the rotating groove, a motor for driving the rotating cylinder to rotate on one side of the housing, a plurality of placement frames evenly distributed on the inner side of the rotating cylinder, the placement frames being driven to rotate by a second motor, an opening on one side of each placement frame, and a limiting mechanism for limiting the lithium battery position within each placement frame.

[0007] Furthermore: a limiting ring is sleeved on the outer side of the rotating cylinder, and an annular groove adapted to the limiting ring is provided in the rotating groove.

[0008] Furthermore: the rotating drum is provided with several connecting seats, the second motor is fixedly connected to the connecting seats, and the output shaft of the second motor is connected to the side of the placement frame.

[0009] Furthermore: the limiting mechanism includes a bolt and an L-shaped plate, the bolt is threadedly connected to the placement frame, and one end of the bolt is rotatably connected to the L-shaped plate.

[0010] Furthermore, a locking nut is threaded onto the bolt located on the outside of the placement frame.

[0011] The advantages of this utility model compared with the prior art are: This patent uses a pair of rotating drums powered by a motor to rotate the lithium batteries inside the placement frame, which in turn powers a second motor. During the cell immersion process, the lithium batteries can be rotated horizontally and vertically, resulting in a uniform immersion effect and more comprehensively promoting the flow and distribution of the electrolyte. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a structural diagram of a lithium battery cell immersion device according to the present invention.

[0013] Figure 2 This is a cross-sectional view of a lithium battery cell immersion device according to the present invention.

[0014] Figure 3 This is a structural diagram of the rotating drum of a lithium battery cell immersion device according to the present invention.

[0015] Figure 4 This is a cross-sectional view of the placement frame of a lithium battery cell immersion device according to the present invention.

[0016] In the attached image: 1. Base; 2. Box body; 21. Rotating groove; 22. Motor 1; 23. Annular groove; 3. Rotating cylinder; 31. Limiting ring; 32. Motor 2; 4. Placement frame; 5. Limiting mechanism; 51. Bolt; 52. L-shaped plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Combined with appendix Figure 1-4 This utility model provides a lithium battery cell immersion device, including a base 1, a housing 2, a rotating cylinder 3, and placement frames 4. The housing 2 is located on the upper end of the base 1, and the lower end of the base 1 is provided with evenly distributed support legs to support the entire device and ensure its stability during operation. The housing 2 has a rotating groove 21, and the rotating cylinder 3 is rotatably connected to the rotating groove 21. A motor 22 for driving the rotating cylinder 3 is provided on one side of the housing 2. The motor 22 is a small motor with a built-in power supply, avoiding the need for external wiring. The output shaft of the motor 22 passes through the housing 2 and is fixedly connected to the rotating cylinder 3. Several placement frames 4 are evenly arranged inside the rotating cylinder 3 and are driven by the motor 22. 32 drives rotation. The placement frame 4 has an opening on one side. The placement frame 4 is equipped with a limiting mechanism 5 for limiting the lithium battery. The limiting mechanism 5 includes a bolt 51 and an L-shaped plate 52. The bolt 51 is threadedly connected to the placement frame 4. One end of the bolt 51 is rotatably connected to the L-shaped plate 52. A locking nut is threaded on the bolt 51 on the outside of the placement frame 4. When placing the lithium battery, the bolt 51 is rotated to move the L-shaped plate 52 and place the lithium battery with electrolyte into the placement frame 4. Then, the bolt 51 is rotated to clamp the lithium battery with the L-shaped plate 52. The locking nut needs to be tightened to limit the bolt 51 and improve the stability of the bolt 51. Combined with appendix Figure 1-4 A limiting ring 31 is fitted on the outer side of the rotating drum 3. An annular groove 23 adapted to the limiting ring 31 is provided in the rotating groove 21 to maintain the movement trajectory of the rotating drum 3 and reduce the damage to the motor 22 due to excessive weight of the rotating drum 3. Several connecting seats are provided inside the rotating drum 3. The motor 32 is fixedly connected to the upper end of the connecting seats. The output shaft of the motor 32 is fixedly connected to the side of the placement frame 4. During immersion, the output shaft of the motor 22 drives the rotating drum 3 to rotate in the vertical plane, thereby causing the lithium battery in the placement frame 4 to rotate in the vertical plane. At the same time, the output shaft of the motor 32 drives the lithium battery in the placement frame 4 to rotate around the output shaft of the motor 32. The lithium battery can obtain a uniform immersion effect during the immersion process. The electrolyte can flow and distribute fully in the cell, avoiding the problem of uneven immersion caused by uneven electrolyte flow. After immersion, the operation of the motor 22 and the motor 32 is stopped. The lithium battery is taken out through the opening of the placement frame 4, completing the entire immersion process.

[0019] The working principle of this application is as follows: When placing the lithium battery, rotate bolt 51 to move L-shaped plate 52, and place the lithium battery with electrolyte already injected into the placement frame 4. Then rotate bolt 51 to clamp the lithium battery with L-shaped plate 52. During immersion, the output shaft of motor 1 22 drives the rotating drum 3 to rotate in the vertical plane, thereby causing the lithium battery in the placement frame 4 to rotate in the vertical plane. At the same time, the output shaft of motor 2 32 drives the lithium battery in the placement frame 4 to rotate around the output shaft of motor 2 32. The lithium battery can achieve a uniform immersion effect during the immersion process, and the electrolyte can flow and distribute fully in the cell, avoiding uneven immersion caused by uneven electrolyte flow. After immersion is completed, stop the operation of motor 1 22 and motor 2 32, and take out the lithium battery through the opening of the placement frame 4 to complete the entire immersion process.

[0020] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A lithium battery cell infiltration device comprising a base (1), characterized in that: The base (1) has a box (2) at the upper end. The box (2) has a rotating groove (21) inside. A rotating cylinder (3) is rotatably arranged in the rotating groove (21). A motor (22) is provided on one side of the box (2) to drive the rotating cylinder (3) to rotate. Several placement frames (4) are evenly arranged inside the rotating cylinder (3). The placement frames (4) are driven to rotate by a motor (32). An opening is provided on one side of the placement frame (4). A limiting mechanism (5) for limiting the lithium battery is provided inside the placement frame (4).

2. The lithium battery cell infiltration device of claim 1, wherein: The rotating drum (3) is fitted with a limiting ring (31) on the outside, and the rotating groove (21) is provided with an annular groove (23) that is adapted to the limiting ring (31).

3. The lithium battery cell infiltration device of claim 2, wherein: The rotating drum (3) is provided with several connecting seats. The second motor (32) is fixed on the connecting seats. The output shaft of the second motor (32) is connected to the side of the placement frame (4).

4. The lithium battery cell infiltration device of claim 1, wherein: The limiting mechanism (5) includes a bolt (51) and an L-shaped plate (52). The bolt (51) is threadedly connected to the placement frame (4), and one end of the bolt (51) is rotatably connected to the L-shaped plate (52).

5. The lithium battery cell impregnation apparatus of claim 4, wherein: The bolt (51) is threaded with a locking nut on the outside of the placement frame (4).

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