Lithium battery cell surface dust particle collecting device
By designing a dust collection device for lithium battery cell surfaces and using a combination of air blowing and deionized water, the problem of non-standard dust management on the surface of lithium battery cores was solved, achieving simple and efficient dust collection and detection, and ensuring battery quality.
Patent Information
- Application Number
- CN202422998012.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-05
AI Technical Summary
In the lithium battery production process, improper dust management on the surface of the core leads to the adhesion of particulate matter, which is difficult to monitor and detect effectively, and may result in self-discharge and short circuit.
A dust collection device for lithium battery cells is designed. The cell is clamped by a clamping structure, and the dust is blown to the inner wall of the collection chamber by a blower. The inner wall is then rinsed with deionized water, and the dust is collected and tested in liquid form.
It enables simple and efficient collection and detection of dust particles on the surface of lithium battery cores, ensuring battery quality monitoring and avoiding the risks of self-discharge and short circuits.
Smart Images
Figure CN223819268U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of lithium battery testing technology, specifically relating to a dust particle collection device on the surface of a lithium battery cell. Background Technology
[0002] During lithium battery production, the battery cores are prone to particle accumulation due to improper dust management or debris generated during transfer. These particles can cause self-discharge of the cores, puncture of the ceramic film, and thus short circuits. Therefore, collecting and detecting particles on the battery surface is essential. However, currently, there is a lack of simple testing and collection equipment for detecting surface particles in semi-finished battery cores, making effective monitoring difficult. Utility Model Content
[0003] This utility model provides a device for collecting dust particles on the surface of a lithium battery cell. The cell is clamped by a clamping structure, and the dust on the surface of the cell is blown onto the inner wall of the dust collection chamber by a blowing port. Then, the inner wall of the dust collection chamber is rinsed with deionized water to remove and collect the dust on the surface of the cell.
[0004] The technical solution adopted in this utility model is as follows:
[0005] A dust particle collection device for lithium battery cells includes a dust collection chamber, a cover plate, and a clamping structure. The cover plate is placed at the top opening of the dust collection chamber, and the clamping structure is disposed inside the collection chamber. A drain port is located at the bottom of the dust collection chamber, and a flushing port is located on the side wall of the dust collection chamber. The dust collection chamber provides space for the removal and collection of dust from the cell surface. The clamping structure holds the cell, and the flushing port is connected to a blower and a sprayer. First, the blower cleans the dust on the cell surface held by the clamping structure, blowing it to the inner wall of the dust collection chamber. Then, the sprayer flushes the inner wall of the dust collection chamber, collecting the dust in liquid form, which is then discharged from the drain port for testing. The cover plate seals the top opening of the dust collection chamber, and a removable rubber plug is installed at the drain port.
[0006] In a preferred embodiment of this invention, the clamping structure is at least one. That is, the dust collection chamber can either clean and collect dust from the surface of only one battery cell, or multiple clamping structures can be used to clean and collect dust from the surfaces of multiple battery cells simultaneously.
[0007] In a preferred embodiment of this utility model, the clamping structure includes a clamping fixing member, a first clamp, and a second clamp. One end of the clamping fixing member is fixedly connected to a cover plate, and the other end is fixedly connected to the outer wall of the first clamp. The second clamp is disposed opposite to the first clamp and is detachably connected to it. The first arc groove of the first clamp and the second arc groove of the second clamp constitute a battery cell clamping position. Both the first and second arc grooves are covered with buffer rubber to prevent damage to the battery cell. The first and second clamps can be arranged vertically or horizontally to clamp the battery cell, as long as they can clamp the battery cell. Preferably, the clamped battery cell is located in the middle of the dust collection chamber.
[0008] In a preferred embodiment of this utility model, the dust collection chamber includes an upper working chamber and a lower drain chamber, which are interconnected. The drain outlet is located in the lower drain chamber, and the inner wall of the lower drain chamber is inclined towards the drain outlet. A cover plate is provided at the top opening of the upper working chamber. A blowing port is provided on the side wall of the upper working chamber. The upper working chamber is mainly used to hold the battery cell and blow air onto the surface of the battery cell to remove dust. The dust is blown onto the inner wall of the upper working chamber, the inner wall of the lower drain chamber, and the inner wall of the cover plate, mainly concentrated on the inner wall of the upper working chamber. During the blowing process, the drain outlet is blocked with a rubber stopper. After the blowing is completed, deionized water is sprayed to make the dust into a solution, which is then discharged from the lower drain chamber for subsequent testing.
[0009] As a preferred embodiment of this utility model, the lower drain chamber is a conical cavity, which makes it easier for liquid to drain.
[0010] In a preferred embodiment of this invention, the dust collection chamber is a transparent chamber. Transparency allows for a direct view of the operating components.
[0011] As a preferred embodiment of this utility model, a handle is installed on the cover plate.
[0012] In a preferred embodiment of this invention, the dust collection chamber is mounted on an adjustable bracket. The height of the dust collection chamber can be adjusted as needed.
[0013] In a preferred embodiment of this invention, the adjustable height bracket includes a bracket base, a vertical support rod, and a horizontal support rod. The vertical support rod is fixed to the bracket base, and the horizontal support rod is adjustablely mounted on the vertical support rod. The end of the horizontal support rod furthest from the vertical support rod is connected to the dust collection chamber, and there is a gap between the drain port and the bracket base. The connection method between the horizontal and vertical support rods uses a conventional structure, as long as the horizontal and vertical support rods can be fixed together and their height can be adjusted. The horizontal support rod provides support for the dust collection chamber, making it higher than the bracket base. To prevent tilting, the bracket base is heavy enough that it will not tilt even if the dust collection chamber contains a battery cell or liquid.
[0014] As a preferred embodiment of this utility model, a collection container is placed below the drain outlet.
[0015] This invention uses a clamping structure to hold the battery cell in a cavity. Then, air is blown into the battery cell inside the cavity to blow the dust on the surface of the battery cell to the inner wall of the cavity. Next, deionized water is sprayed to make the dust on the inner wall into a solution, which is discharged from the lower drain port into a collection container. The solution in the collection container is sent for testing. The height of the dust collection cavity can be adjusted according to the testing requirements. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .
[0018] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 . Detailed Implementation
[0019] 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.
[0020] Example:
[0021] A device for collecting dust particles from the surface of a lithium battery cell, such as Figure 1 and 2 As shown, it includes a dust collection chamber 1, a cover plate 2, and a clamping structure 3. A handle 4 is installed on the cover plate 2. The cover plate 2 is placed at the top opening of the dust collection chamber 1, and the clamping structure 3 is set inside the collection chamber of the dust collection chamber 1. A drain port 11 is provided at the lower part of the dust collection chamber 1, and a blow-out working port 12 is provided on the side wall of the dust collection chamber 1.
[0022] The dust collection chamber provides space for the removal and collection of dust on the surface of the battery cell. In this embodiment, the dust collection chamber 1 includes an upper working chamber 13 and a lower drain chamber 14. The upper working chamber 13 and the lower drain chamber 14 are connected. The drain port 11 is located in the lower drain chamber 14, and the inner wall of the lower drain chamber 14 is inclined toward the drain port 11. A conical cavity is preferably used. The cover plate 2 is placed at the top opening of the upper working chamber 13. The blow-through working port 12 is provided on the side wall of the upper working chamber 13.
[0023] The upper working chamber is mainly used to clamp the battery cell and blow air onto the surface of the battery cell to remove dust. The dust is blown onto the inner wall of the upper working chamber, the inner wall of the lower drain chamber, and the inner wall of the cover plate, mainly concentrated on the inner wall of the upper working chamber. During the blowing process, the drain port is blocked with a rubber stopper. After the blowing is finished, deionized water is sprayed to make the dust into a solution, which is then discharged from the lower drain chamber for subsequent testing.
[0024] In this embodiment, the dust collection chamber 1 is a transparent chamber. Transparency allows for a direct view of the operating area.
[0025] The clamping structure is located within the upper working cavity 13, and as... Figure 1 As shown, the clamping structure includes a clamping fixing member 31, a first clamping claw 32, and a second clamping claw 33. One end of the clamping fixing member 31 is fixedly connected to the cover plate 2, which can be fixed with screws using conventional means. The other end of the clamping fixing member 31 is fixedly connected to the outer wall of the first clamping claw 32. The second clamping claw 33 is arranged opposite to the first clamping claw 32 and is detachably connected to the second clamping claw 32. In this embodiment, screws and nuts are used for fixing. The edges of the first clamping claw and the second clamping claw are overlapped and fixed with screws. The first arc groove of the first clamping claw 32 and the second arc groove of the second clamping claw 33 form a cell clamping position. Both the first arc groove and the second arc groove are covered with buffer rubber to avoid damaging the cell.
[0026] The first and second grippers can be arranged vertically or horizontally to hold the battery cell, as long as they can hold the battery cell. Preferably, the battery cell is located in the middle of the dust collection chamber. In this embodiment, the horizontal arrangement is shown as an example.
[0027] In this embodiment, the number of clamping structures is shown as one, but multiple structures can be set as needed. When multiple structures are set, they can share a single clamping fastener 31, and then use other auxiliary structures to install multiple grippers.
[0028] To facilitate the collection of dust and liquid, and to meet different testing requirements, the dust collection chamber 1 is mounted on an adjustable support 5. The adjustable support 5 includes a support base 51, a vertical support rod 52, and a horizontal support rod 53. The vertical support rod 52 is fixed to the support base 51, and the horizontal support rod 53 is adjustablely mounted on the vertical support rod. The end of the horizontal support rod 53 furthest from the vertical support rod is connected to the dust collection chamber 1, and there is a gap between the drain port 11 and the support base 51. A collection container 6 is placed below the drain port 11.
[0029] The connection between the horizontal and vertical support rods uses a conventional structure, as long as it can fix the horizontal and vertical support rods together and allow for height adjustment. In this embodiment, the end of the horizontal support rod is provided with a support ring, which surrounds the dust collection cavity. Preferably, in this embodiment, it surrounds the outer wall of the lower drain cavity 14, and the inner diameter of the support ring is smaller than the outer wall of the upper working cavity 13, directly supporting the dust collection cavity, cover plate, and clamping structure. Of course, other support methods can also be used, as long as the dust collection cavity can be supported without tilting. The connection between the horizontal and vertical support rods can be made using a clamp structure. The horizontal support rod provides support for the dust collection cavity, making it higher than the bracket base. To prevent tilting, the bracket base is heavy enough that it will not tilt even if the dust collection cavity contains battery cells and liquid.
[0030] After releasing the second clamp and placing the battery cell in place, tighten the second clamp to clamp the battery cell with the first clamp. Then, place the cover plate 2 on top of the upper working chamber. The battery cell and the clamping structure are both located in the upper working chamber. Connect an external blower to the working port and use the blower to clean the dust on the surface of the battery cell held by the clamping structure, blowing it to the inner wall of the dust collection chamber. Then, connect an external sprayer and use deionized water to rinse the inner wall of the dust collection chamber, collecting the dust in liquid form. Discharge the liquid from the drain port into the collection container 6 placed below the drain port. Then, filter the liquid in the collection container and send it for testing to obtain the surface dust particle distribution data of the corresponding core. The above device facilitates the surface particle testing of lithium batteries.
[0031] This invention fills the gap in the testing fixtures for surface particles on lithium battery cores, providing a simple device for fixing lithium battery cores and collecting surface particles during the manufacturing process. It provides a new device for monitoring and identifying the distribution of dust particles and foreign matter on the surface of lithium battery cores in lithium battery production lines.
[0032] In this specification, the terms "an embodiment," "example," "specific example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A device for collecting dust particles from the surface of a lithium battery cell, characterized in that: It includes a dust collection chamber (1), a cover plate (2) and a clamping structure (3). The cover plate (2) is placed at the top opening of the dust collection chamber (1), and the clamping structure (3) is set inside the collection chamber of the dust collection chamber (1). The lower part of the dust collection chamber (1) is provided with a drain port (11), and the side wall of the dust collection chamber (1) is provided with a blow-out working port (12).
2. The dust particle collection device for lithium battery cell surface according to claim 1, characterized in that: The clamping structure is at least one.
3. The dust particle collection device for the surface of a lithium battery cell according to claim 1 or 2, characterized in that: The clamping structure includes a clamping fixing member (31), a first clamping claw (32), and a second clamping claw (33). One end of the clamping fixing member (31) is fixedly connected to the cover plate (2), and the other end of the clamping fixing member (31) is fixedly connected to the outer wall of the first clamping claw (32). The second clamping claw (33) is arranged opposite to the first clamping claw (32) and is detachably connected to the second clamping claw (33). The first arc groove of the first clamping claw (32) and the second arc groove of the second clamping claw (33) constitute a cell clamping position.
4. The dust particle collection device on the surface of a lithium battery cell according to claim 3, characterized in that: The dust collection chamber (1) includes an upper working chamber (13) and a lower drain chamber (14), which are connected. The drain port (11) is located in the lower drain chamber (14), and the inner wall of the lower drain chamber (14) is inclined toward the drain port (11). The cover plate (2) is provided at the top opening of the upper working chamber (13). The blow-through working port (12) is provided on the side wall of the upper working chamber (13).
5. The lithium battery cell surface dust particle collection device according to claim 4, characterized in that: The lower discharge chamber (14) is a conical cavity.
6. The dust particle collection device for lithium battery cell surface according to claim 5, characterized in that: The dust collection chamber (1) is a transparent chamber.
7. The dust particle collection device for lithium battery cell surface according to claim 6, characterized in that: A handle (4) is installed on the cover plate (2).
8. The lithium battery cell surface dust particle collection device according to claim 6, characterized in that: The dust collection chamber (1) is installed on the height-adjustable bracket (5).
9. The dust particle collection device for lithium battery cell surface according to claim 8, characterized in that: The adjustable height bracket (5) includes a bracket base (51), a vertical support rod (52) and a horizontal support rod (53). The vertical support rod (52) is fixed on the bracket base (51), and the horizontal support rod (53) is adjustablely installed on the vertical support rod. The end of the horizontal support rod (53) away from the vertical support rod is connected to the dust collection chamber (1), and there is a gap between the drain port (11) and the bracket base (51).
10. The dust particle collection device on the surface of a lithium battery cell according to claim 9, characterized in that: A collection container (6) is placed below the drain outlet (11).