Cylindrical lithium ion battery vibration device

Abstract

The utility model provides a cylindrical lithium ion battery vibration device. The vibration device comprises a roller conveying line, a jacking mechanism and a vibration mechanism. The jacking mechanism is installed below rollers of the roller conveying line, the movable end of the jacking mechanism is located in a gap between every two adjacent rollers, and the jacking mechanism is used for jacking a battery tray loaded with batteries; the vibration mechanism comprises a mechanical telescopic piece, a shock absorber, a vibration motor, a support and a clamping component. The supports are located on the outer portions of the two symmetrical sides of the roller conveying line and close to the jacking mechanism. The mechanical telescopic pieces are mounted at four corners of the bracket; the damper is arranged at the bottom of the mechanical telescopic piece; the vibration motor is mounted at the bottom middle section of the bracket; the clamping component is horizontally arranged on the support and used for clamping the battery tray jacked by the jacking mechanism. According to the utility model, the vibration test is carried out on the battery in the battery tray after the cylindrical battery is sealed, so that abnormal batteries can be identified and rejected in advance, the reject ratio and potential risk of the next process are improved, and the process cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, in particular to a cylindrical lithium ion battery vibration device. Background Art

[0002] Nowadays, the battery industry is developing rapidly, and the processing speed of battery production is also accelerating. Since the production welding of batteries is batch welding, during the welding production process, some battery cells will have unstable welding or no welding. If this phenomenon is not discovered in time, it may affect the next process and even cause quality problems. At this time, a device or device is needed to quickly identify or amplify the possibility of failure, so as to accurately and timely screen out abnormal batteries in the production process.

[0003] The purpose of lithium battery vibration testing is to simulate the vibration environment that may be encountered in actual transportation and actual use conditions, in order to detect the response of lithium batteries to these vibrations and the potential interference with safety or performance. This test is not only related to the safety of the battery but also involves the performance, service life and sustainability of the battery. Generally, vibration testing is performed after the battery is assembled into a battery pack. Abnormal batteries in abnormal battery packs are identified through vibration testing at the module stage. However, there is a certain delay in identifying abnormal batteries at this stage, which makes it inconvenient to identify abnormal batteries in advance. Utility Model Content

[0004] Based on this, it is necessary to provide a cylindrical lithium-ion battery vibration device to address the problem of delayed vibration testing after the battery is assembled into a battery pack.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A cylindrical lithium-ion battery vibration device comprises a roller conveyor line, a lifting mechanism and a vibration mechanism.

[0007] The lifting mechanism is installed under the rollers of the roller conveyor line, and the movable end of the lifting mechanism is located in the gap between two adjacent rollers, and is used to lift the battery tray loaded with batteries;

[0008] The vibration mechanism includes a mechanical telescopic part, a shock absorber, a vibration motor, a bracket and a clamping component; the bracket is located outside the two symmetrical sides of the roller conveyor line and close to the jacking mechanism; the mechanical telescopic part is installed at the four corners of the bottom of the bracket; the shock absorber is arranged at the bottom of the mechanical telescopic part; the vibration motor is installed in the middle section of the bottom of the bracket; the clamping component is horizontally arranged on the bracket to clamp the battery tray lifted by the jacking mechanism.

[0009] Furthermore, the clamping component includes a telescopic cylinder and a clamping plate; the fixed end of the telescopic cylinder is installed on the side of the bracket and is located above the roller of the roller conveyor line; the clamping plate is connected to the movable end of the telescopic cylinder.

[0010] Furthermore, an anti-skid pad is bonded to the inner side of the splint, and the surface of the anti-skid pad has anti-skid patterns.

[0011] Furthermore, the clamp is U-shaped and is arranged longitudinally, and the gap between the top and bottom bends of the clamp is adapted to the height of the battery tray.

[0012] Furthermore, the bracket includes a side branch and a bottom branch; the side branch is located outside the roller conveyor line, and the bottom is connected to the mechanical telescopic part. The height of the side branch is higher than the roller conveyor line, and the telescopic cylinder is installed on the side branch. The bottom branch is located below the roller of the roller conveyor line and is staggered with the jacking mechanism. The bottom branch connects the side branches on both sides of the roller conveyor line into one, and the vibration motor is installed on the bottom branch.

[0013] Furthermore, the outer walls of the plurality of shock absorbers are connected as a whole via a stabilizing rod.

[0014] Furthermore, the mechanical telescopic member includes a spring; two ends of the spring are respectively connected to the side branch and the shock absorber.

[0015] Furthermore, the lifting mechanism includes a lifting cylinder and a lifting plate; the lifting cylinder is installed under the roller of the roller conveyor line, the active end of the lifting cylinder faces upward and is connected to the lifting plate, and the lifting plate serves as the active end of the lifting mechanism, and is initially located in the gap between two adjacent rollers.

[0016] Furthermore, there are two lifting plates, which are L-shaped and symmetrically arranged along the conveying direction of the roller conveyor line. The gap at the bending part of the two lifting plates is adapted to the size of the battery tray.

[0017] Furthermore, a position sensor for sensing the position of the battery tray is provided on the roller conveyor line close to the lifting mechanism.

[0018] Compared with the prior art, the beneficial effects of the utility model include:

[0019] 1. The utility model performs a vibration test on the batteries in the battery tray after the cylindrical batteries are sealed, so as to identify and remove abnormal batteries in advance, improve the defect rate and potential risks of the next process, and reduce the process cost; it is installed on the conveyor line before capacity separation, and the safety risk of the shipped batteries is reduced through the cooperation of the lifting mechanism and the vibration mechanism;

[0020] 2. The clamping component of the utility model can fit tightly against the battery tray to limit and fix it, and vibrate along with the bracket to reduce the risk of the battery tray detaching. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings, the same reference numerals are used to refer to the same components. Among them:

[0022] Figure 1 A three-dimensional diagram of a cylindrical lithium-ion battery vibration device introduced in Example 1 of the utility model;

[0023] Figure 2 Based on Figure 1 A three-dimensional diagram of the vibration mechanism and the lifting mechanism;

[0024] Figure 3 Based on Figure 1 A side view of a cylindrical lithium-ion battery vibration device;

[0025] Figure 4 This is a schematic diagram of the U-shaped clamp and the battery tray introduced in Example 2;

[0026] Figure 5 This is a schematic diagram of the L-shaped lifting plate and battery tray introduced in Example 3.

[0027] Explanations in the figure: 1. Roller conveyor line; 2. Lifting mechanism; 21. Lifting cylinder; 22. Lifting plate; 3. Vibration mechanism; 31. Mechanical telescopic part; 32. Shock absorber; 33. Vibration motor; 34. Bracket; 341. Side branch; 342. Bottom branch; 35. Clamping component; 351. Telescopic cylinder; 352. Clamp; 4. Stabilizing rod. DETAILED DESCRIPTION

[0028] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0029] Example 1

[0030] See also Figure 1 This embodiment introduces a cylindrical lithium-ion battery vibration device, which is mainly composed of a roller conveyor line 1, a lifting mechanism 2 and a vibration mechanism 3.

[0031] The roller conveyor line 1 adopts the existing structure, which is mainly composed of a machine body, rollers, drive components, control components, etc. The drive components mainly include motors, reduction boxes, transmissions, etc. Since it is an existing structure, it will not be described here. However, it should be emphasized that the rollers are distributed horizontally and linearly, and there is a gap between adjacent rollers, but this gap is much smaller than the battery tray used to load batteries.

[0032] like Figure 2 As shown, the lifting mechanism 2 is mainly composed of a lifting cylinder 21 and a lifting plate 22. The lifting cylinder 21 is installed on the body of the roller conveyor line 1 and is located below the roller. The movable end of the lifting cylinder 21 is upward and longitudinally retractable. The lifting cylinder 21 can be installed below the roller through an auxiliary mounting frame. The movable end of the lifting cylinder 21 is connected to the lifting plate 22. The width of the lifting plate 22 is smaller than the gap between adjacent rollers. The length of the lifting plate 22 is determined by referring to the axial length of the roller and the size of the battery tray. When the lifting cylinder 21 is extended, the lifting plate 22 can pass through the gap between adjacent rollers and is located above the roller. If the tray just moves to the lifting plate 22 at this time, it will move up and away from the roller with the lifting plate 22.

[0033] In order to know the position of the battery tray conveniently, a position sensor (not shown in the figure) can be installed on the body of the roller conveyor line 1 to sense the position of the battery tray on the roller conveyor line 1 in real time. At the beginning, the roller conveyor line 1 normally conveys the battery tray. When it is conveyed to the preset vibration position, the battery tray is just above the lifting plate 22. At this time, the rollers of the roller conveyor line 1 can be stopped, and the lifting cylinder 21 can be started at the same time, so that the battery tray follows the lifting plate 22 and leaves the roller.

[0034] like Figure 2 As shown, the vibration mechanism 3 is mainly composed of a mechanical telescopic part 31, a shock absorber 32, a vibration motor 33, a bracket 34 and a clamping part 35. The bracket 34 is located on the outside of the roller conveyor line 1, and the bracket 34 includes a side branch 341 and a bottom branch 342; the two side branches 341 are located on the outside of the roller conveyor line 1 on both sides that are symmetrical, and close to the jacking mechanism 2, and the bottoms of the two side branches 341 are connected as a whole by the bottom branch 342. The bottom branch 342 is located below the roller, and the two side branches 341 and the bottom branch 342 form a U-shaped structure. The bottom branch 342 can be located below the jacking cylinder 21, maintaining a safe distance and not interfering with each other. Or a hole is opened at the position directly opposite to the jacking cylinder 21, and there is no direct contact with the jacking cylinder 21, and no interference is caused.

[0035] The mechanical telescopic member 31 is arranged on both sides of the bottom edge of the side branch 341, and the bottom end of the mechanical telescopic member 31 is connected to the shock absorber 32. The mechanical telescopic member 31 preferably has a spring with certain support, and the shock absorber 32 is preferably a seat spring shock absorber 32. The seat spring shock absorber 32 is used to prevent excessive vibration and resonance, and plays a role in stabilizing the support bracket 34. The setting of the spring is also to cooperate with the vibration work of the vibration motor 33, so that the bracket 34 can vibrate with the vibration motor 33. The mechanical telescopic member can also take other results that are flexible and can cooperate with vibration. The vibration motor 33 is installed on the bottom branch 342, and the two ends of the vibration motor 33 have eccentric wheels (inertia flywheels) for providing the rotational inertia of the vibration, ensuring that the bracket 34 can operate normally according to a certain vibration frequency amplitude, and the vibration frequency can be changed by changing the speed of the motor, so the bracket 34 can be vibrated according to the required vibration frequency by controlling the vibration motor 33. The amplitude can be adjusted by the size of the inertia flywheel of the motor.

[0036] In order to improve the stability of the shock absorber 32 , the shells of several shock absorbers 32 are connected as a whole through a stabilizing rod 4 , which also improves the support of the entire vibration mechanism 3 .

[0037] The telescopic cylinder 351 is horizontally mounted on the side branch 341, and the height of the telescopic cylinder 351 is higher than the roller height of the roller conveyor line 1 and is adapted to the height of the battery tray. The movable end of the lifting cylinder 21 faces inward and is connected to the clamp 352. When the battery tray is lifted by the lifting mechanism 2, the clamp 352 is flush with the battery tray. At this time, the telescopic cylinder 351 can be driven to extend so that the clamp 352 fits tightly against the outer wall of the battery tray. When the vibration motor 33 is driven, the bracket 34 vibrates, and the battery tray can vibrate together to screen out the batteries that are not welded well in the battery tray. In order to improve the close fit between the clamp 352 and the battery, an anti-skid pad is bonded to the inside of the clamp 352, and the surface of the anti-skid pad has an anti-skid pattern.

[0038] Therefore, the overall workflow is as follows:

[0039] The battery tray loaded with batteries is placed on the rollers of the roller conveyor line 1, and the battery tray is conveyed by the rollers. When it is conveyed to the preset vibration position, the battery tray is just above the jacking plate 22. At this time, the rollers of the roller conveyor line 1 can stop conveying, and the jacking cylinder 21 is started at the same time, so that the battery tray is separated from the roller along with the jacking plate 22, and then the telescopic cylinder 351 is extended to make the clamping plate 352 close to the battery tray, and then the vibration motor 33 is started to vibrate the battery tray. After the vibration, the telescopic cylinders 351 on both sides are loosened, the battery tray drops, and the rollers start to rotate to transport the battery tray to the next process. The batteries in the battery tray are then subjected to capacity division and OCV tests, and the problems of poor welding of the collector plate and bending of the collector plate contacting the shell are magnified. In subsequent tests, abnormal batteries are screened through abnormal electrical performance data.

[0040] This embodiment performs a vibration test on the batteries in the battery tray after the cylindrical batteries are sealed, so as to identify and remove abnormal batteries in advance, improve the defect rate and potential risks of the next process, and reduce the process cost; it is installed on the conveyor line before capacity separation, and the safety risk of shipped batteries is reduced through the cooperation of the lifting mechanism 2 and the vibration mechanism 3. The vibration mechanism is installed on the conveyor line after sealing, which can detect all single cells in the previous process, and convey them to the next process after the detection is completed, with high detection efficiency; extend the battery life, detect and solve the reasons that may cause premature battery degradation, and reduce resource waste by optimizing the battery; make full use of battery performance, evaluate factors such as battery capacity retention rate, cycle life and charge and discharge rate through strict vibration testing, and optimize battery efficiency.

[0041] Example 2

[0042] like Figure 4 As shown, this embodiment introduces a cylindrical lithium-ion battery vibration device, which is basically the same in structure as the cylindrical lithium-ion battery vibration device introduced in Example 1. The difference is that the clamping plate 352 of this embodiment is U-shaped and arranged longitudinally, and the gap between the top and bottom bends of the clamping plate 352 is adapted to the height of the battery tray. When the lifting mechanism 2 lifts the battery tray, the telescopic cylinder 351 extends, and the battery tray can be located in the gap of the clamping plate 352, and the battery tray can vibrate together with the vibration mechanism 3.

[0043] This embodiment has the same beneficial effects as Embodiment 1.

[0044] Example 3

[0045] like Figure 5 As shown, this embodiment introduces a cylindrical lithium-ion battery vibration device, which is basically the same in structure as the cylindrical lithium-ion battery vibration device introduced in Example 1. The difference is that the number of the lifting plates 22 in this embodiment is two, and the two lifting plates 22 are L-shaped and symmetrically arranged along the conveying direction of the roller conveyor line 1. The gap at the bend of the two lifting plates 22 is adapted to the size of the battery tray. The longitudinal bending height of the lifting plate 22 is not high, which plays a role in further intercepting the battery tray and preventing the battery tray from falling out of the vibration position. When the lifting cylinder 21 contracts, the lifting plate 22 can be completely located in the gap of the roller, which is lower than the height of the top of the roller, and does not affect the battery detachment and continued conveyance.

[0046] This embodiment has the same beneficial effects as Embodiment 1.

[0047] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A cylindrical lithium-ion battery vibration device, characterized in that: It includes: Roller conveyor line (1); A lifting mechanism (2) is installed below the rollers of the roller conveyor line (1), wherein the movable end of the lifting mechanism (2) is located in the gap between two adjacent rollers and is used to lift the battery tray loaded with batteries; The vibration mechanism (3) comprises a mechanical telescopic member (31), a shock absorber (32), a vibration motor (33), a bracket (34) and a clamping component (35); the bracket (34) is located outside two symmetrical sides of the roller conveyor line (1) and close to the lifting mechanism (2); the mechanical telescopic member (31) is installed at the four corners of the bottom of the bracket (34); the shock absorber (32) is arranged at the bottom of the mechanical telescopic member (31); the vibration motor (33) is installed in the middle section of the bottom of the bracket (34); and the clamping component (35) is horizontally arranged on the bracket (34) to clamp the battery tray lifted by the lifting mechanism (2).

2. The cylindrical lithium-ion battery vibration device according to claim 1, characterized in that: The clamping component (35) comprises a telescopic cylinder (351) and a clamping plate (352); the fixed end of the telescopic cylinder (351) is mounted on the side of the bracket (34) and is located above the roller of the roller conveyor line (1); and the clamping plate (352) is connected to the movable end of the telescopic cylinder (351).

3. The cylindrical lithium-ion battery vibration device according to claim 2, characterized in that: An anti-skid pad is bonded to the inner side of the splint (352), and the surface of the anti-skid pad has anti-skid patterns.

4. The cylindrical lithium-ion battery vibration device according to claim 2, characterized in that: The clamping plate (352) is U-shaped and is arranged longitudinally, and the gap between the top and bottom bends of the clamping plate (352) is adapted to the height of the battery tray.

5. The cylindrical lithium-ion battery vibration device according to claim 2, characterized in that: The bracket (34) comprises a side branch (341) and a bottom branch (342); the side branch (341) is located outside the roller conveyor line (1), the bottom of the side branch (341) is connected to the mechanical telescopic member (31), the height of the side branch (341) is higher than the roller conveyor line (1), and the telescopic cylinder (351) is installed on the side branch (341); the bottom branch (342) is located below the roller of the roller conveyor line (1), and is staggered with the lifting mechanism (2); the bottom branch (342) connects the side branches (341) located on both sides of the roller conveyor line (1) into one body, and the vibration motor (33) is installed on the bottom branch (342).

6. The cylindrical lithium-ion battery vibration device according to claim 1, characterized in that: The outer walls of the plurality of shock absorbers (32) are connected as a whole via a stabilizing rod (4).

7. The cylindrical lithium-ion battery vibration device according to claim 5, characterized in that: The mechanical telescopic member (31) comprises a spring; two ends of the spring are respectively connected to the side branch (341) and the shock absorber (32).

8. The cylindrical lithium-ion battery vibration device according to claim 5, characterized in that: The lifting mechanism (2) comprises a lifting cylinder (21) and a lifting plate (22); the lifting cylinder (21) is installed below the rollers of the roller conveyor line (1); the movable end of the lifting cylinder (21) faces upward and is connected to the lifting plate (22); the lifting plate (22) serves as the movable end of the lifting mechanism (2) and is initially located in the gap between two adjacent rollers.

9. The cylindrical lithium-ion battery vibration device according to claim 8, characterized in that: There are two lifting plates (22), which are L-shaped and symmetrically arranged along the conveying direction of the roller conveyor line (1), and the gap between the bending parts of the two lifting plates (22) is adapted to the size of the battery tray.

10. The cylindrical lithium-ion battery vibration device according to claim 1, characterized in that: A position sensor for sensing the position of the battery tray is provided on the roller conveyor line (1) close to the lifting mechanism (2).

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