Glue repairing device for cold solder joint area of battery cell
Through visual inspection and rotation mechanism and the dispensing machine, the battery cell is filled with conductive glue to the virtual welding area, which solves the problems of reduced overcurrent area and reduced welding strength caused by virtual welding, improves the battery cell production yield and reduces costs.
Patent Information
- Application Number
- CN202421828742.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-07-30
AI Technical Summary
In the production process of cylindrical batteries, overlap welding of the negative electrode current collecting disk and steel shell can easily lead to false welding, resulting in a decrease in overflow area and a decrease in welding strength. In the prior art, direct use of conductive adhesive connections has low production efficiency and risk of welded parts displacement, resulting in product scrapping.
The visual detection mechanism is used to detect the virtual welding area, and the rotating mechanism drives the battery core to rotate, so that the dispensing head of the dispensing machine is aligned with the virtual welding area and fills the conductive glue, so as to realize the current conduction and physical bonding, and make up for the problems caused by the virtual welding.
It improves the production yield of the battery cell, avoids the risk of welding, improves production efficiency and reduces costs, and ensures the accuracy of conductive glue filling.
Smart Images
Figure CN223055971U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery production and manufacturing, in particular to a glue filling device for the virtual soldering area of a battery cell. Background Technique
[0002] Since cylindrical batteries have advantages such as high safety, simple production processes, and low production costs compared to traditional square aluminum shell batteries and soft-pack batteries, they have been regarded as a trend in the future development of the lithium battery industry, and the production processes and production equipment for cylindrical batteries are also constantly evolving and updating.
[0003] During the production process of cylindrical batteries, it is necessary to perform lap welding between the negative current collector plate and the steel shell for electrical connection. Affected by the height consistency of the folded edge (welding area) of the negative current collector plate, it is easy to cause defects such as virtual soldering. The virtual soldering area cannot form an effective current conduction, resulting in the welding overcurrent area not meeting the product requirements. At the same time, the reduction of the effective welding area also reduces the welding strength. If re-welding the virtual soldering area, it is easy to cause defects such as welding through or back marks, reducing the production yield of the product. If directly using conductive glue to connect the negative current collector plate and the steel shell instead of performing lap welding between the negative current collector plate and the steel shell for electrical connection, there are problems such as slow solidification process of the conductive glue, low production efficiency, and the risk of relative displacement between the welded parts and the parts to be welded during the solidification process of the conductive glue, which will ultimately lead to product scrapping. Content of the Utility Model
[0004] Based on this, in view of the technical problems existing in the current methods of electrically connecting the negative current collector plate and the steel shell by lap welding and directly using conductive glue to connect the negative current collector plate and the steel shell, the utility model provides a glue filling device for the virtual soldering area of a battery cell.
[0005] A glue filling device for the virtual soldering area of a battery cell proposed by the utility model is used to fill conductive glue into the virtual soldering area after lap welding of the battery cell, and it includes:
[0006] A dispensing machine;
[0007] A vision detection mechanism, which is used to detect the lap welding position of the battery cell to obtain the position of the virtual soldering area; and
[0008] A rotating mechanism, which is used to drive the battery cell to rotate according to the position of the virtual soldering area detected by the vision detection mechanism so that the virtual soldering area corresponds to the dispensing head of the dispensing machine, and the dispensing machine is used to fill conductive glue into the virtual soldering area.
[0009] Based on the visual inspection mechanism, the present utility model detects the virtual welding area at the lap welding position of the battery cell, and then drives the battery cell to rotate through the rotating mechanism so that the virtual welding area corresponds to the dispensing head of the dispenser. The virtual welding area is filled with conductive adhesive through the dispensing head, so that the virtual welding area realizes current conduction and physical adhesion, making up for the problems of reduced overcurrent area and decreased welding strength caused by virtual welding, achieving the effect of repairing the virtual welding area while avoiding the risk of welding through, and improving the production yield of the battery cell.
[0010] As a further improvement of the above solution of the present utility model, the rotating mechanism includes a mounting plate, a motor and a driving wheel. The battery cell is placed on the mounting plate, the motor is fixed on the mounting plate, and the driving wheel is in rolling contact with the battery cell and the driving wheel is fixed on the output shaft of the motor.
[0011] As a further improvement of the above solution of the present utility model, the mounting plate is arranged obliquely, which is convenient for the visual inspection mechanism to obtain the image of the lap welding position of the battery cell to detect and judge the virtual welding area.
[0012] As a further improvement of the above solution of the present utility model, a support seat is fixed on the mounting plate, and a support wheel for supporting the bottom of the battery cell is fixed on the support seat.
[0013] As a further improvement of the above solution of the present utility model, a plurality of support plates arranged side by side are also fixed on the mounting plate, and two driven wheels for supporting the battery cell and arranged parallel and opposite to each other are rotatably mounted on the support plates.
[0014] As a further improvement of the above solution of the present utility model, the inclination angle of the mounting plate is 30° - 60°.
[0015] As a further improvement of the above solution of the present utility model, the inclination angle of the mounting plate is 45°.
[0016] As a further improvement of the above solution of the present utility model, the support wheel is made of rubber wheel.
[0017] As a further improvement of the above solution of the present utility model, the driven wheel is made of rubber wheel.
[0018] As a further improvement of the above solution of the present utility model, the driving wheel is made of rubber wheel.
[0019] Compared with the prior art, the present utility model has the following beneficial effects:
[0020] 1. The utility model detects the virtual soldering area at the lap welding position of the battery cell through a vision detection mechanism, and then drives the battery cell to rotate through a rotating mechanism so that the virtual soldering area corresponds to the dispensing head of the dispenser. The virtual soldering area is filled with conductive adhesive through the dispensing head, so that the virtual soldering area realizes current conduction and physical adhesion, making up for the problems of reduced over-current area and decreased welding strength caused by virtual soldering, achieving the effect of repairing virtual soldering in the virtual soldering area while avoiding the risk of welding through, and improving the production yield of the battery cell.
[0021] 2. The utility model fills the virtual soldering area of the battery cell with conductive adhesive, which improves the production efficiency and yield compared with directly using conductive adhesive to connect the negative current collector plate and the steel shell, and at the same time reduces the production cost of the battery cell.
[0022] 3. The utility model first performs vision detection on the virtual soldering area and then fills it with conductive adhesive, ensuring the accuracy of the filling position of the conductive adhesive. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 is a schematic structural diagram of a device for filling glue in the virtual soldering area of a battery cell provided by an embodiment of the utility model;
[0024] Figure 2 is Figure 1 an enlarged schematic view of part A in
[0025] Reference numerals: 1, battery cell; 2, vision detection mechanism; 3, mounting plate; 4, support seat; 5, support wheel; 6, support plate; 7, driven wheel; 8, motor; 9, driving wheel; 10, dispensing head; 11, lap welding position. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0026] The following will clearly and completely describe the technical solutions in the embodiments of the utility model with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the utility model without creative efforts shall fall within the protection scope of the utility model.
[0027] In this embodiment, aiming at the technical problems existing in the current methods of making lap welding electrical connections between the negative current collector plate and the steel shell and directly using conductive adhesive to connect the negative current collector plate and the steel shell, a device for filling glue in the virtual soldering area of the battery cell 1 is provided, which is used to fill the virtual soldering area at the lap welding position 11 of the battery cell 1 with conductive adhesive, so that the virtual soldering area realizes current conduction and physical adhesion, making up for the problems of reduced over-current area and decreased welding strength caused by virtual soldering, achieving the effect of repairing virtual soldering in the virtual soldering area while avoiding the risk of welding through, and improving the production yield of the battery cell 1. Refer to Figure 1 、 Figure 2, the glue filling device for the virtual soldering area of the battery cell 1 in this embodiment includes a dispensing machine, a vision detection mechanism 2, a rotating mechanism, and may also include a device controller.
[0028] The rotating mechanism is used to drive the battery cell 1 to rotate. In this embodiment, the rotating mechanism includes a mounting plate 3, a motor 8, and a driving wheel 9. The mounting plate 3 is inclined and installed on an external device. A support seat 4 is fixed on the mounting plate 3, and a support wheel 5 is fixed on the support seat 4. In this embodiment, the inclination angle of the mounting plate 3 relative to the horizontal plane is 45°. Of course, in other embodiments, the inclination angle of the mounting plate 3 relative to the horizontal plane can also be other angles such as 30° and 50°. In this embodiment, the support wheel 5 is a rubber wheel, and the rubber wheel can avoid damaging the battery cell 1. Of course, in other embodiments, the support wheel 5 can also be a wheel body made of other flexible materials. Two parallel and side-by-side arranged support plates 6 are also fixed on the mounting plate 3 at a position above the support wheel 5. Two parallel and oppositely arranged driven wheels 7 are rotatably installed on each support plate 6. In this embodiment, the driven wheels 7 are also rubber wheels, and the rubber wheels can avoid damaging the battery cell 1. Of course, in other embodiments, the driven wheels 7 can also be wheel bodies made of other flexible materials. The motor 8 is fixed on the mounting plate 3 and is communicatively connected to the device controller. The driving wheel 9 is fixed on the output shaft of the motor 8 and the axis of the driving wheel 9 is parallel to the axis of the driven wheel 7. The motor 8 is controlled by the device controller to start to drive the driving wheel 9 to rotate, and the driving wheel 9 can drive the battery cell 1 to rotate. In this embodiment, the driving wheel 9 is also a rubber wheel, and the rubber wheel can avoid damaging the battery cell 1. Of course, in other embodiments, the driving wheel 9 can also be a wheel body made of other flexible materials.
[0029] The dispensing machine in this embodiment adopts the prior art and has a dispensing head 10. In this embodiment, the dispensing head 10 is fixed so that the glue outlet of the dispensing head 10 is aligned with the lap welding position 11 of the battery cell 1. The conductive glue filling of the virtual soldering area is realized through the dispensing head 10. By setting an electromagnetic valve communicatively connected to the device controller on the dispensing head 10, the device controller can control whether the dispensing head 10 discharges glue by controlling the opening and closing of the electromagnetic valve.
[0030] The vision detection mechanism 2 is fixed above the mounting plate 3 and is communicatively connected to the device controller. The vision detection mechanism 2 is used to detect whether there is a virtual soldering area at the lap welding position 11 between the negative current collector plate and the steel shell in the battery cell 1. If there is a virtual soldering area, the positions of each virtual soldering area are obtained and a signal one is sent to the device controller, and the device controller controls the motor to start according to the signal one; at the same time, when the battery cell is rotating, the vision detection mechanism 2 also detects in real time whether the target virtual soldering area reaches the glue outlet position of the dispensing head 10. If the target virtual soldering area reaches the glue outlet position of the dispensing head 10, a signal two is sent to the device controller, and the device controller controls the motor to stop and controls the electromagnetic valve to open to make the dispensing head 10 discharge glue according to the signal two. The inclined arrangement of the mounting plate 3 facilitates the vision detection mechanism 2 to detect and judge the virtual soldering area.
[0031] It should be noted that the visual inspection mechanism 2 in this embodiment uses a visual inspection device of the prior art. The detection of the solder joint void area is a known technology in the prior art. At the same time, the detection of whether the target solder joint void area reaches the dispensing port position of the dispensing head 10 by the visual inspection mechanism 2 is also a known technology in the prior art, and its working principle is clear, so it will not be elaborated here; the control logic of the equipment controller to control the motor 8 to start according to one signal, stop according to another signal, and open the solenoid valve is also clear, so it will not be elaborated here.
[0032] When the battery cell solder joint void area filling device in this embodiment is working, the battery cell 1 to be processed is placed on multiple driven wheels 7 and supported by the multiple driven wheels 7. At the same time, the bottom of the battery cell 1 contacts the support wheel 5, and the dispensing head 10 of the dispenser is fixed so that the dispensing port of the dispensing head 10 is aligned with the lap welding position 11 of the battery cell 1; then the visual inspection mechanism 2 is started to detect whether there is a solder joint void area at the lap welding position 11 of the battery cell 1. If there is a solder joint void area, the visual inspection mechanism 2 obtains the positions of each solder joint void area and sends a first signal to the equipment controller; the equipment controller controls the motor 8 to start according to the first signal, and the motor 8 drives the driving wheel 9 to rotate, so that the driving wheel 9 drives the battery cell 1 to rotate; during the rotation of the battery cell 1, the visual inspection mechanism 2 continuously detects whether the target solder joint void area reaches the dispensing port position of the dispensing head 10. When the visual inspection mechanism 2 detects that the target solder joint void area reaches the dispensing port position of the dispensing head 10, it sends a second signal. The equipment controller controls the motor to stop rotating according to the second signal, and controls the solenoid valve of the dispensing head 10 to act so that the dispensing head 10 discharges glue to fill each solder joint void area; after the filling is completed, the equipment controller controls the solenoid valve to close and controls the motor 8 to start to drive the battery cell 1 to continue rotating to perform the glue filling work for the next solder joint void area; repeat this process until the glue filling work for all solder joint void areas is completed, so as to realize current conduction and physical adhesion in the solder joint void area, make up for the problems of reduced overcurrent area and decreased welding strength caused by solder joint voids, achieve the effect of repairing the solder joint void area while avoiding the risk of welding through, reduce the usage amount of conductive glue while achieving the effect of repair welding, and improve the production yield of the battery cell 1.
[0033] It should be noted that when a component is referred to as being "mounted on" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "arranged on" another component, it can be directly arranged on the other component or there may be an intermediate component at the same time. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there may be an intermediate component at the same time.
[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs. The terms used in the specification of this utility model herein are for the purpose of describing specific embodiments only and are not intended to limit this utility model. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.
[0035] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.
[0036] The above-described embodiments merely represent several implementation manners of this utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of this utility model, several modifications and improvements can still be made, and these all belong to the protection scope of this utility model. Therefore, the protection scope of this utility model patent shall be subject to the appended claims.
Claims
1. A conductive adhesive filling device for the virtual soldering area of an electric core, which is used to fill the virtual soldering area after lap soldering of the electric core (1) with conductive adhesive, and is characterized in that, It includes: A dispensing machine; A vision inspection mechanism (2) for detecting the lap welding position of the battery cell (1) to obtain the position of the defective welding area; And A rotating mechanism for driving the battery cell (1) to rotate so that the defective welding area corresponds to the dispensing head (10) of the dispensing machine, and the dispensing machine is used to fill the defective welding area with conductive adhesive.
2. The glue filling device for the virtual soldering area of the battery cell according to claim 1, wherein The rotating mechanism includes a mounting plate (3), a motor (8) and a driving wheel (9). The battery cell (1) is placed on the mounting plate (3). The motor (8) is fixed on the mounting plate (3). The driving wheel (9) is in rolling contact with the battery cell (1) and the driving wheel (9) is fixed on the output shaft of the motor (8).
3. The glue filling device for the virtual soldering area of the battery cell according to claim 2, characterized in that, The mounting plate (3) is arranged obliquely.
4. The glue filling device for repairing the virtual soldering area of the battery cell according to claim 2, wherein A support seat (4) is fixed on the mounting plate (3), and a support wheel (5) for supporting the bottom of the battery cell (1) is fixed on the support seat (4).
5. The glue filling device for the virtual soldering area of the battery cell according to claim 2, wherein, A plurality of parallel arranged support plates (6) are also fixed on the mounting plate (3), and two parallel and relatively arranged driven wheels (7) for supporting the battery cell (1) are rotatably mounted on the support plates (6).
6. The glue filling device for the virtual soldering area of the battery cell according to claim 3, characterized in that The inclination angle of the mounting plate (3) is 30° - 60°.
7. The glue filling device for the virtual soldering area of the battery cell according to claim 6, wherein The inclination angle of the mounting plate (3) is 45°.
8. The glue filling device for the virtual soldering area of the battery cell according to claim 4, characterized in that, The support wheel (5) is made of a rubber wheel.
9. The glue filling device for the virtual soldering area of the battery cell according to claim 5, wherein, The driven wheel (7) is made of a rubber wheel.
10. The glue filling device for repairing the virtual soldering area of the battery cell according to claim 2, wherein, The driving wheel (9) is made of a rubber wheel.