A vibration flow line and a lithium battery defect detection system

Abstract

The utility model discloses a kind of vibration assembly line and lithium battery defect detection system, including support, drum spacedly distributed on the support and the power device for driving each described drum synchronous rotation, the cross section of the drum selectively switches from the first mode of circular to the second mode of local bulge.The vibration assembly line can be flexibly switched between horizontal conveying mode and vibration conveying mode, meet different working condition requirements, good compatibility;Vibration conveying can advance the deterioration of foreign matter / welding defect inside lithium battery, help to exclude abnormal battery through K value and capacity screening.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery defect detection technology, and in particular to a vibration production line and a lithium battery defect detection system. Background Technology

[0002] Lithium batteries may experience abnormalities such as low voltage and low capacity during use. This is mostly due to manufacturing defects (foreign objects, poor welding, and torn tabs) that are not completely and effectively identified and removed, leading to the entry of defective batteries into the market. During use, these batteries gradually develop low voltage and low capacity due to vibration. Existing K-value and capacity screening methods cannot completely screen out foreign objects and poor welding.

[0003] Therefore, how to prevent foreign objects and poor welding inside the battery from deteriorating in advance, so as to facilitate the subsequent screening of abnormal batteries by K value and capacity, has become an important problem to be solved. Utility Model Content

[0004] The purpose of this invention is to provide a vibration production line and a lithium battery defect detection system. By vibrating the lithium battery during its flow on the production line, foreign objects and welding defects inside the battery are deteriorated in advance, so as to meet the requirements of subsequent complete defect screening.

[0005] The objective of this utility model is achieved through the following technical solution: A vibrating production line includes a support frame, rollers evenly distributed on the support frame, and a power device for driving the rollers to rotate synchronously. The cross-section of the rollers can be selectively switched from a first circular shape to a second shape with partial convexity.

[0006] In some alternative embodiments, the second shape includes, but is not limited to, an elliptical shape and a cam shape.

[0007] In some alternative embodiments, the roller comprises: The cylindrical body is a hollow circular structure; An elastic membrane, the edges of which are sealed and adhered to the surface of the cylinder body; A through hole connects the inner side of the cylindrical body and the inner side of the elastic membrane; In its natural state, the elastic membrane is tightly attached to the surface of the cylinder body, and the cross-section of the roller is circular in a first state. In the inflated state, the elastic membrane expands and deforms, and the cross-section of the roller is partially convex in a second state.

[0008] In some alternative designs, one end of the roller is sealed and provided with a driven wheel for cooperating with the power unit, while the other end is provided with a rotary joint for connecting to an air pump.

[0009] In some alternative embodiments, the air pump is equipped with a flow control valve, and the rotary joints of each of the rollers are connected to the flow control valve via air pipes.

[0010] In some alternative embodiments, the number of elastic membranes is one or two, and the cross-section of the expanded elastic membrane is crescent-shaped.

[0011] In some alternative designs, the distance from the highest point of the expanded elastic membrane to the surface of the cylinder body is 4mm-8mm.

[0012] In some alternative designs, baffles are provided on both sides of the support, and the roller is positioned between the two baffles.

[0013] In some alternative designs, the bracket is provided with height-adjustable support feet at its base.

[0014] A lithium battery defect detection system includes the aforementioned vibration production line.

[0015] Compared with the prior art, the beneficial effects of this utility model include at least the following: 1. It can flexibly switch between horizontal conveying mode and vibratory conveying mode to meet the requirements of different working conditions and has good compatibility.

[0016] 2. Vibration conveying can exacerbate foreign objects / welding defects inside lithium batteries in advance, which helps to eliminate abnormal batteries through K-value and capacity screening. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the vibrating production line of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure at both ends of the roller.

[0019] Figure 3 This is a cross-sectional schematic diagram of the roller in its first configuration.

[0020] Figure 4 This is a cross-sectional schematic diagram of the roller in its second configuration.

[0021] Figure 5 This is another cross-sectional schematic diagram of the second form of the roller. In the diagram: 1. Support; 2. Roller; 21. Roller body; 22. Elastic membrane; 23. Through hole; 3. Power unit; 4. Driven wheel; 5. Rotary joint; 6. Air pump; 7. Flow control valve; 8. Baffle; 9. Support foot. Detailed Implementation

[0022] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0023] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0024] See Figure 1 As shown, this utility model discloses a vibrating production line, including a support 1, a roller 2 and a power device 3.

[0025] The rollers 2 are rotatably mounted on the support 1 with evenly spaced intervals to form a linear conveying surface. This conveying surface is used to convey target components, including but not limited to lithium batteries. The power unit 3 is also mounted on the support 1 and is connected to the rollers 2 via a transmission. The power unit 3 can be a synchronous belt / chain driven by a motor to control the synchronous rotation of each roller 2.

[0026] In this application, the cross-section of the roller 2 can be selectively switched from a first circular shape to a second shape with partial convexity, thereby achieving a flexible transition between smooth conveying and vibratory conveying.

[0027] Under normal operating conditions, the cross-section of roller 2 is the same as that of roller 2, which ensures the smooth transport of the target component. For special operating conditions, such as when the target component is a lithium battery to be screened, the cross-section of roller 2 can be transformed into a second shape with local convexity, thereby forming a vibration conveying, which will cause foreign objects / welding defects inside the lithium battery on the conveying surface to deteriorate in advance, and help to remove abnormal batteries by screening by K value and capacity.

[0028] like Figures 3 to 5 As shown, in some embodiments, the roller 2 includes a cylinder body 21, an elastic membrane 22, and a through hole 23. The cylinder body 21 is a hollow circular structure, the edge of the elastic membrane 22 is sealed and attached to the surface of the cylinder body 21, and the inner side of the elastic membrane 22 and the inner side of the cylinder body 21 are kept in communication through the through hole 23.

[0029] In its natural state, the elastic membrane 22 is tightly attached to the surface of the cylinder body 21, and the cross-section of the roller 2 is circular, forming a first shape. However, in the inflated state, the elastic membrane 22 expands and deforms, and the cross-section of the roller 2 becomes partially convex, forming a second shape. The first and second shapes can be quickly switched by inflating and deflating the roller 2.

[0030] In one example, the second form is elliptical. Specifically, there are two elastic membranes 22, symmetrically arranged on both sides of the cylindrical body 21. The cross-section of the expanded elastic membrane 22 is crescent-shaped, which, together with the circular cross-section of the cylindrical body 21, forms an approximately elliptical structure. In another example, the second form can also be cam-shaped. Specifically, there is only one elastic membrane 22, which adheres to the surface of the cylindrical body 21 and forms a crescent-shaped cross-section after expansion, forming an approximately cam-shaped structure with the cylindrical body 21.

[0031] It is understood that the number of elastic membranes 22 is not limited to one or two, but depends on the diameter of the roller 2. In addition, the cross-section of the expanded elastic membrane 22 is not limited to crescent shape, but can also be rectangular, hemispherical, etc.

[0032] See Figure 2 As shown, one end of the roller 2 is sealed and equipped with a driven wheel 4 for cooperating with the power unit 3, so as to drive the roller 2 to rotate under the control of the power unit 3. The other end of the roller 2 is equipped with a rotary joint 5 for connecting with the air pump 6, so that the roller 2 meets the design requirements of inflation and deflation while rotating.

[0033] Furthermore, such as Figure 1 As shown, the air pump 6 is equipped with a flow control valve 7, which can be an electromagnetic multi-way valve. The rotary joints 5 of each roller 2 are connected to the flow control valve 7 through air pipes, so as to accurately adjust the air pressure inside each roller 2 and ensure the consistency of the second form.

[0034] In some embodiments, the distance from the highest point of the expanded elastic membrane 22 to the surface of the cylinder body 21 is 4mm-8mm, preferably 4mm-6mm. This range allows the lithium battery to vibrate slightly within a safe range, avoiding destructive damage to its structure.

[0035] See Figure 1 As shown, in some embodiments, baffles 8 are provided on both sides of the support 1, and the roller 2 is located between the two baffles 8 to prevent the target part from falling from both sides of the conveying surface of the roller 2 and causing damage, thereby improving the reliability of the conveying.

[0036] In some optional solutions, the bracket 1 is provided with height-adjustable support feet 9 at its bottom, which are used to adjust the height of the conveying surface of the roller 2, so as to facilitate docking and adjustment between different devices, such as docking and adjustment with the receiving end face of the testing equipment.

[0037] In addition, this utility model also discloses a lithium battery defect detection system, including the above-mentioned vibration conveyor. By switching to vibration conveying mode, foreign objects and welding defects inside the lithium battery can be deteriorated in advance, making it convenient to remove abnormal batteries through K-value and capacity screening.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A vibrating production line, comprising a support (1), rollers (2) evenly distributed on the support (1), and a power device (3) for driving each of the rollers (2) to rotate synchronously, characterized in that, The cross-section of the roller (2) can be selectively switched from a first circular shape to a second shape with partial protrusions.

2. The vibrating conveyor line according to claim 1, characterized in that, The second shape includes, but is not limited to, elliptical and cam-shaped.

3. The vibrating conveyor line according to claim 1, characterized in that, The roller (2) includes: The cylindrical body (21) is a hollow circular structure; An elastic membrane (22) is provided, the edges of which are sealed against the surface of the cylindrical body (21); Through hole (23) connects the inner side of the cylindrical body (21) and the inner side of the elastic membrane (22); In its natural state, the elastic membrane (22) is in close contact with the surface of the cylinder body (21), and the cross-section of the roller (2) is circular in the first state. In the inflated state, the elastic membrane (22) expands and deforms, and the cross-section of the roller (2) is partially convex in the second state.

4. The vibrating production line according to claim 3, characterized in that, One end of the roller (2) is sealed and provided with a driven wheel (4) for cooperating with the power device (3), and the other end is provided with a rotary joint (5) for connecting with the air pump (6).

5. The vibrating production line according to claim 4, characterized in that, The air pump (6) is equipped with a flow control valve (7), and the rotary joint (5) of each roller (2) is connected to the flow control valve (7) through an air pipe.

6. The vibrating production line according to claim 3, characterized in that, The number of elastic membranes (22) is one or two, and the cross-section of the expanded elastic membrane (22) is crescent-shaped.

7. The vibrating production line according to claim 3, characterized in that, The distance from the highest point of the expanded elastic membrane (22) to the surface of the cylinder body (21) is 4mm-8mm.

8. The vibrating conveyor line according to claim 1, characterized in that, The support (1) is provided with baffles (8) on both sides, and the roller (2) is located between the two baffles (8).

9. The vibrating production line according to claim 1, characterized in that, The bracket (1) is provided with height-adjustable support feet (9) below.

10. A lithium battery defect detection system, characterized in that, Including the vibrating production line as described in any one of claims 1-9.

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