Sealing bead screening device for secondary battery

Abstract

The utility model relates to the field of battery sealing, and discloses a sealing bead screening device of a secondary battery, which comprises a battery cell, a knocking device, a bead guide pipe and a sorting device, the battery cell is provided with a liquid injection hole, the knocking device is arranged at the liquid injection hole, the bead guide pipe is communicated with the liquid injection hole and the sorting device, the sorting device comprises a material conveying disc and a pushing piece, the material conveying disc is provided with a collecting hole, and the collecting hole is communicated with the pushing piece. The pushing piece is installed below the conveying disc and located at the collecting hole. The sealing device has the beneficial effects that the sealing device can ensure that only a single sealing bead falls into the bead guide pipe during blanking each time, the bead guide pipe is communicated with the liquid injection hole, the sealing beads fall into the liquid injection hole, and then the knocking device is operated to work, so that the problem of poor sealing caused by punching a plurality of sealing beads at one time is effectively avoided, and the sealing reliability of the secondary battery is improved.

Description

Technical Field

[0001] The utility model relates to the field of battery sealing, in particular to a sealing bead screening device for a secondary battery. Background Art

[0002] During the production of secondary batteries, it is necessary to add an injection hole to the battery cell to inject the electrolyte, and then seal the injection hole. An important way to seal the injection hole is to knock in a sealing bead, and use the interference fit between the sealing bead and the wall of the injection hole to achieve sealing. However, during the assembly process, the sealing beads are small and inconvenient to pick up manually, resulting in low efficiency of the manual sealing method. A secondary battery only requires one sealing bead, but the current automated sealing bead screening device has a sealing bead feeding channel that is prone to jamming, or multiple sealing beads are discharged at a time, resulting in poor assembly of the sealing beads and failure of the secondary battery seal. Therefore, there is an urgent need for a new sealing bead screening device for secondary batteries to solve the above problems. Utility Model Content

[0003] The purpose of the present application is to provide a sealing bead screening device for a secondary battery, so as to stably and reliably achieve sealing of the secondary battery by the sealing beads.

[0004] The purpose of this application is achieved through the following technical solutions:

[0005] A sealing bead screening device for a secondary battery comprises: a battery cell, a knocking device, a bead guide tube and a sorting device, wherein the battery cell is provided with an injection hole, the knocking device is arranged at the injection hole and is used to drive the sealing beads into the injection hole, the bead guide tube connects the injection hole and the sorting device, the sorting device comprises a feed tray and a pushing piece, the feed tray is provided with a collection hole for accommodating the sealing beads, the pushing piece is installed below the feed tray and located at the collection hole, and is used to push the sealing beads upward into the bead guide tube, and the bead guide tube is used to introduce the sealing beads into the injection hole.

[0006] In some embodiments of the present application, the liquid injection hole is opened at the top of the battery core, and the knocking device, the bead guide tube and the sorting device are all located above the liquid injection hole.

[0007] In some embodiments of the present application, the sorting device further includes a transmission member, the feed tray is provided with a plurality of the collecting holes, and the transmission member is connected to the feed tray for driving the collecting holes of the feed tray to move above the pushing member respectively.

[0008] In some embodiments of the present application, the collecting holes are arranged in a ring-shaped manner and spaced apart from each other on the feed tray, and the transmission member is used to drive the feed tray to rotate so that the collecting holes are moved above the pushing members respectively.

[0009] In some embodiments of the present application, the feed tray is further provided with a sinking groove, which is arranged in a ring shape along the extension direction of the collecting hole, and the sinking groove is located above the collecting hole.

[0010] In some embodiments of the present application, the sorting device further includes a feeding tank, the bottom opening of the feeding tank is close to the sinking platform, and the feeding tank and the pushing member are arranged to avoid each other in the circumferential direction.

[0011] In some embodiments of the present application, the sorting device further includes a detection member, which is arranged on the other side of the collecting hole relative to the pushing member and is used to detect the number of the sealing beads in the collecting hole.

[0012] In some embodiments of the present application, the sorting device further includes a drop tank, which is disposed below the feed tray and close to the pushing member, and the drop tank is connected to one end of the bead guide tube.

[0013] In some embodiments of the present application, the feed tray is arranged at an angle, and the pushing member and the bead guiding tube are both located on the side of the feed tray that is inclined downward.

[0014] In some embodiments of the present application, the diameter of the collecting hole is set to be larger at the top and smaller at the bottom, and one collecting hole can only accommodate one sealing bead.

[0015] The sealing bead screening device of the secondary battery of the present application is used to seal the liquid injection hole of the battery cell by knocking the sealing beads through the knocking device. The sorting device is used to screen the sealing beads. The feed tray is provided with a collecting hole for accommodating the sealing beads, in which the sealing beads can be placed. The pushing piece is provided below the feed tray, which can push the sealing beads in the collecting hole upward to make them move upward away from the feed tray. In this way, it can be ensured that only a single sealing bead falls into the bead guide tube each time the material falls. The bead guide tube is connected to the liquid injection hole, the sealing bead falls into the liquid injection hole, and then the knocking device is operated to work, which effectively avoids the problem of poor sealing caused by driving multiple sealing beads at one time, and improves the reliability of the secondary battery sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the sealing bead screening device for the secondary battery of the present application;

[0017] Figure 2 is a perspective view of the sorting device of the present application;

[0018] Figure 3 is a top view of the sorting device of the present application;

[0019] Figure 4 is a cross-sectional view of the sorting device of the present application;

[0020] Figure 5 This is a cross-sectional view of the connection position between the feed tank and the feed tray of the present application.

[0021] In the figure, 1. battery cell; 11. injection hole; 2. knocking device; 3. bead guide tube; 4. sorting device; 41. feed tray; 411. collecting hole; 412. sink trough; 42. push piece; 43. transmission part; 44. feed tank; 45. detection part; 46. drop tank; 5. sealing beads. DETAILED DESCRIPTION

[0022] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] In the description of this application, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer" used herein to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] 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 connection 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.

[0025] like Figure 1-Figure 5 As shown, an embodiment of the present application proposes a sealing bead screening device for a secondary battery, comprising: a battery cell 1, a knocking device 2, a bead guiding tube 3 and a sorting device 4, the battery cell 1 is provided with a liquid injection hole 11, the knocking device 2 is arranged at the liquid injection hole 11, and is used to drive the sealing beads 5 into the liquid injection hole 11, the bead guiding tube 3 connects the liquid injection hole 11 and the sorting device 4, the sorting device 4 comprises a feed tray 41 and a pushing member 42, the feed tray 41 is provided with a collecting hole 411 for accommodating the sealing beads 5, the pushing member 42 is installed below the feed tray 41 and is located at the collecting hole 411, and is used to push the sealing beads 5 upward into the bead guiding tube 3, and the bead guiding tube 3 is used to introduce the sealing beads 5 into the liquid injection hole 11.

[0026] Based on the above technical solution, in the sealing bead screening device for the secondary battery of the present application, the liquid injection hole 11 of the battery cell 1 is sealed by knocking the sealing beads 5 through the knocking device 2, and the sorting device 4 is used to screen the sealing beads 5, and the feed tray 41 thereof is provided with a collecting hole 411 for accommodating the sealing beads 5, in which the sealing beads 5 can be placed, and the pushing member 42 is provided below the feed tray 41, which can push the sealing beads 5 in the collecting hole 411 upward to make them move upward away from the feed tray 41, so that it can be ensured that each time the material falls, only a single sealing bead 5 falls into the bead guide tube 3, the bead guide tube 3 is connected to the liquid injection hole 11, the sealing bead 5 falls into the liquid injection hole 11, and then the knocking device 2 is operated to work, which effectively avoids the problem of poor sealing caused by driving multiple sealing beads 5 at one time, and improves the reliability of the sealing of the secondary battery.

[0027] In some embodiments of the present application, Figure 1 As shown, the injection hole 11 is opened at the top of the battery cell 1, and the knocking device 2, the bead guide tube 3 and the sorting device 4 are all located above the injection hole 11. The main structure of the screening device is located above the battery cell 1, and gravity can be used to achieve the drop of the sealing beads 5. There is no need to introduce other guiding or guiding structures to move the sealing beads 5 to the injection hole 11, which makes the structure simpler.

[0028] In some embodiments of the present application, Figure 2 、 Figure 4 As shown, the sorting device 4 also includes a transmission member 43. The feed tray 41 is provided with a plurality of collection holes 411. The transmission member 43 is connected to the feed tray 41 and is used to drive the collection holes 411 of the feed tray 41 to move above the push member 42. The plurality of collection holes 411 are moved one by one above the push member 42 in coordination with the movement of the transmission member 43. The sealing members are then pushed out of the collection holes 411 one by one by the push member 42. Each push can seal the injection hole 11 of one battery cell 1, thereby quickly achieving the sealing of multiple battery cells 1 and improving the sealing efficiency. The transmission member 43 can be operated manually or automatically assembled using a CNC motor, which is simple, practical and easy to process.

[0029] Specifically, such as Figure 2 、 Figure 3 、 Figure 5As shown, the collecting holes 411 are arranged in a circular pattern on the feed tray 41, spaced one by one. The transmission member 43 is used to drive the feed tray 41 to rotate so that the collecting holes 411 are moved above the pushing members 42. By rotating the feed tray 41 to move the collecting holes 411 above the pushing members 42, automated work can be simply and effectively achieved, and the precision requirements of automated work can be significantly reduced. Stable material dropping can be achieved by only precisely controlling the rotation angle.

[0030] More specifically, Figure 2 、 Figure 3 、 Figure 5 As shown, the feed tray 41 is further provided with a sinking groove 412, which is arranged in a ring shape along the extension direction of the collecting hole 411, and the sinking groove 412 is located above the collecting hole 411. After the sinking groove 412 is provided, when the sealing beads 5 are placed in the collecting hole 411, even if the placement position is deviated, the sealing beads 5 will not move around as if they were placed on a flat surface, but will be limited by the sinking groove 412. The staff can simply touch the sealing beads 5 to make them fall into the collecting hole 411. At the same time, the sealing beads 5 can also fall into the collecting hole 411 when the feed tray 41 rotates, so that the sealing beads 5 can be placed in the collecting hole 411 more stably and conveniently.

[0031] More specifically, Figure 2-Figure 5 As shown, the sorting device 4 further includes a feeding tank 44 , the bottom opening of the feeding tank 44 is close to the sinking groove 412 , and the feeding tank 44 and the pushing member 42 are arranged to avoid each other in the circumferential direction. The feed tank 44 can be used to store multiple sealing beads 5. During the rotation of the feed tray 41, the multiple collection holes 411 under the sink trough 412 pass through the bottom opening of the feed tank 44 in turn, and the sealing beads 5 enter the collection holes 411 from the bottom opening of the feed tank 44. Because the feed tank 44 is close to the sink trough 412, the remaining sealing beads 5 after the sealing beads 5 enter the collection holes 411 will be blocked by the inner wall of the feed tank 44 in the feed tank 44, and with the arrival of the next empty collection hole 411, the sealing beads 5 will be sent into the collection hole 411 again. At the same time, the push member 42 avoids the feed tank 44 and will not be blocked by the feed tank 44 and the sealing beads 5 therein when pushing the sealing beads 5 upwards. Then, as the feed tray 41 rotates, the sealing beads 5 are automatically dropped. The sealing bead 5 screening device with the above structure is not easy to get stuck and has high practicality.

[0032] In some embodiments of the present application, Figure 2-Figure 4As shown, the sorting device 4 further includes a detection member 45, which is disposed on the other side of the collecting hole 411 relative to the pushing member 42 and is used to detect the number of the sealing beads 5 in the collecting hole 411. After detection by the detection member 45, if there are no or multiple sealing beads 5 in the collecting hole 411, the pushing member 42 will not operate until there is only one sealing bead 5 in the collecting hole 411, thereby further ensuring that the sealing beads 5 are dropped individually.

[0033] In some embodiments of the present application, Figure 2 、 Figure 3 As shown, the sorting device 4 further includes a drop tank 46, which is disposed below the feed tray 41 and near the push member 42. The drop tank 46 is connected to one end of the bead guide tube 3. The drop tank 46 is used to collect the sealing beads 5 pushed out by the push member 42 and introduce the collected sealing beads 5 into the bead guide tube 3, thereby allowing the sealing beads 5 to fall into the liquid injection hole 11 along the bead guide tube 3.

[0034] In some embodiments of the present application, Figure 1 、 Figure 2 As shown, the feed tray 41 is tilted, and the pusher 42 and the bead guide tube 3 are both located on the side of the feed tray 41 that tilts downward. The tilt of the feed tray 41 allows the pusher 42 to push out the sealing beads 5 and allow them to fall more easily into the bead guide tube 3 or the drop tank 46 without the need for additional guiding structures.

[0035] In some embodiments of the present application, Figure 4 、 Figure 5 As shown, the diameter of the collecting hole 411 is set to be larger at the top and smaller at the bottom, and each collecting hole 411 can only accommodate one sealing bead 5. The larger diameter at the top and smaller diameter at the bottom can make it easier for the sealing bead 5 to fall into the collecting hole 411, and the collecting hole 411 can only accommodate one sealing bead 5, which can more reliably achieve the purpose of dropping a single sealing bead 5.

[0036] The working process of this application is as follows: the feed tray 41 is placed at an angle, with the side equipped with the detection member 45 and the push member 42 tilted downward. After entering the feed tank 44, the sealing bead 5 enters the collection hole 411 through the sink groove 412. The collection hole 411 is configured to be larger at the top and smaller at the bottom. The hole can only accommodate one sealing bead 5, and the sealing bead 5 is no higher than the surface of the feed tray 41. The transmission member 43 drives the feed tray 41 to rotate. The sealing beads 5 that fail to enter the collection hole 411 will be blocked by the wall of the feed tank 44 and remain in the feed tank 44. After the feed tray 41 rotates a certain angle, the collecting hole 411 with the sealing bead 5 is placed between the detection part 45 and the pushing part 42. After the detection part 45 detects the presence of the sealing bead 5, the pushing part 42 moves toward the collecting hole 411, pushing the sealing bead 5 out of the hole, and with the action of gravity, it falls into the drop tank 46 below. The drop tank 46 is connected to the bead guide tube 3, and the sealing bead 5 then falls under the knocking device 2 and is pressed into the injection hole 11 to complete the sealing assembly.

[0037] In summary, in the sealing bead screening device for secondary batteries of the present application, the liquid injection hole 11 of the battery cell 1 is sealed by knocking the sealing beads 5 through the knocking device 2, and the sorting device 4 is used to screen the sealing beads 5, and the feed tray 41 thereof is provided with a collecting hole 411 for accommodating the sealing beads 5, in which the sealing beads 5 can be placed, and the pushing member 42 is provided below the feed tray 41, which can push the sealing beads 5 in the collecting hole 411 upward to make them move upward away from the feed tray 41, so that it can be ensured that each time the material falls, only a single sealing bead 5 falls into the bead guide tube 3, the bead guide tube 3 is connected to the liquid injection hole 11, the sealing bead 5 falls into the liquid injection hole 11, and then the knocking device 2 is operated to work, which effectively avoids the problem of poor sealing caused by driving multiple sealing beads 5 at one time, and improves the reliability of the sealing of the secondary battery.

[0038] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present application. These improvements and replacements should also be regarded as the scope of protection of the present application.

Claims

1. A sealing bead screening device for a secondary battery, characterized in that: include: A battery cell, a knocking device, a bead guide tube and a sorting device, wherein the battery cell is provided with a liquid injection hole, the knocking device is arranged at the liquid injection hole, and is used to drive the sealing beads into the liquid injection hole, the bead guide tube connects the liquid injection hole and the sorting device, and the sorting device includes a feed tray and a pushing piece, the feed tray is provided with a collecting hole for accommodating the sealing beads, the pushing piece is installed below the feed tray and is located at the collecting hole, and is used to push the sealing beads upward into the bead guide tube, and the bead guide tube is used to introduce the sealing beads into the liquid injection hole.

2. The sealing bead screening device for a secondary battery according to claim 1, wherein: The injection hole is opened at the top of the battery core, and the knocking device, the bead guide tube and the sorting device are all located above the injection hole.

3. The sealing bead screening device for a secondary battery according to claim 1, wherein: The sorting device further includes a transmission member, the feed tray is provided with a plurality of the collecting holes, and the transmission member is connected to the feed tray and is used to drive the collecting holes of the feed tray to move above the pushing member respectively.

4. The sealing bead screening device for a secondary battery according to claim 3, wherein: The collecting holes are arranged in a ring-shaped manner on the feed tray at intervals, and the transmission member is used to drive the feed tray to rotate so that the collecting holes are moved above the pushing members respectively.

5. The sealing bead screening device for a secondary battery according to claim 4, wherein: The feed tray is further provided with a sinking groove, which is arranged in a ring shape along the extending direction of the collecting hole, and the sinking groove is located above the collecting hole.

6. The sealing bead screening device for a secondary battery according to claim 5, wherein: The sorting device further includes a feeding tank, the bottom opening of which is close to the sinking platform, and the feeding tank and the pushing member are arranged to avoid each other in the circumferential direction.

7. The sealing bead screening device for a secondary battery according to any one of claims 1 to 6, characterized in that: The sorting device further includes a detection member, which is arranged on the other side of the collecting hole relative to the pushing member and is used to detect the number of the sealing beads in the collecting hole.

8. The sealing bead screening device for a secondary battery according to any one of claims 1 to 6, characterized in that: The sorting device further comprises a material dropping tank, which is arranged below the feed tray and close to the pushing member, and the material dropping tank is connected to one end of the bead guiding tube.

9. The sealing bead screening device for a secondary battery according to any one of claims 1 to 6, characterized in that: The feed tray is arranged obliquely, and the pushing member and the bead guiding tube are both located on a side of the feed tray that is inclined downward.

10. The sealing bead screening device for a secondary battery according to any one of claims 1 to 6, characterized in that: The diameter of the collecting hole is set to be larger at the top and smaller at the bottom, and one collecting hole can only accommodate one sealing bead.

Images