Soft package lithium battery tab smoothing mechanism

Abstract

The utility model relates to a soft package lithium battery tab smoothing mechanism which comprises a battery material taking mechanism and a tab smoothing main mechanism, the tab smoothing main mechanism is arranged in front of the battery material taking mechanism, a lifting air cylinder connecting plate of the tab smoothing main mechanism is fixedly connected to an equipment platform, a lifting air cylinder is fixedly connected to the lifting air cylinder connecting plate, and the lifting air cylinder is fixedly connected to the equipment platform. The lifting air cylinder is fixedly connected with the horizontal air cylinder through the horizontal air cylinder connecting plate, the horizontal air cylinder is fixedly connected with the smoothening mechanism main plate, the smoothening mechanism main plate is connected with the roller type smoothening mechanism, a smoothening roller of the roller type smoothening mechanism is provided with a battery supporting seat right opposite to the position where a battery tab is placed, and the battery supporting seat is fixedly connected with the supporting seat support. The supporting base support is fixedly connected to the equipment platform, and a battery detection station is arranged on one side of the battery supporting base. The battery tab flattening device can flatten battery tabs passing through a production line, provides necessary conditions for subsequent battery detection, and can adapt to tabs of different specifications and sizes.

Description

Technical Field

[0001] The utility model technical field, in particular, relates to a soft-pack lithium battery tab flattening mechanism. Background Art

[0002] During the production process of soft-pack lithium batteries, the battery shell voltage, voltage internal resistance and other tests need to be carried out. These tests require the detection head to be in full contact with the positive and negative ears of the battery to obtain accurate test results. If the contact is poor, it may cause inaccurate test results, thus affecting the safety and quality of the battery. However, in the actual production process of the battery, the positive and negative ears of the battery are easily bent and deformed by external forces. During the test, the detection head cannot be in full contact with the positive and negative ears, resulting in inaccurate test results. On the one hand, it will cause the quality of the battery product to decline, and on the other hand, the equipment will frequently alarm, causing a decrease in production. How to meet the requirements of online fast, accurate and safe flattening of the ears of soft-pack lithium batteries is an urgent problem to be solved by technical personnel in this industry.

[0003] At present, the smoothing of the positive and negative tabs of soft-pack lithium batteries is mainly done manually and with a scraper. Manual smoothing is when the operator manually smoothes the battery tabs one by one, which is inefficient and not suitable for mass production, and the smoothing effect is easily affected by the operator's skill level. Another method is to use a scraper to smooth the tabs. The scraper is close to the top of the battery tab and then presses down. After the scraper presses the battery tab, it moves horizontally along the length of the tab to smooth the tab. Due to the sliding friction between the scraper and the tab surface, it is easy to cause scratches on the tab surface, resulting in a poor appearance of the tab. In addition, the scraper and the tab are in hard contact without a buffer device. Once the pressure of the scraper is too large, it is easy to cause the tab to detach from the battery body, causing damage to the battery. In severe cases, it will cause a short circuit inside the battery and cause explosion. Utility Model Content

[0004] The utility model aims to overcome the deficiencies in the prior art and provides a soft-pack lithium battery tab flattening mechanism, which can ensure that the battery tab can be flattened quickly, accurately and safely on a production line.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a soft-pack lithium battery tab flattening mechanism, including a battery material taking mechanism and a tab flattening main mechanism, the tab flattening main mechanism is arranged in front of the battery material taking mechanism, the tab flattening main mechanism is placed in front of the battery material taking mechanism, the tab flattening main mechanism includes an equipment platform, a lifting cylinder connecting plate, a lifting cylinder, a horizontal cylinder connecting plate, a horizontal cylinder, a flattening mechanism main board, a flattening roller, a battery support seat and a support seat bracket, the lifting cylinder connecting plate Fixed on the equipment platform, the lifting cylinder is fixed on the lifting cylinder connecting plate, the lifting cylinder is connected to the horizontal cylinder connecting plate, the horizontal cylinder connecting plate is fixed to the horizontal cylinder, the horizontal cylinder is fixed to the smoothing mechanism mainboard, the smoothing mechanism mainboard is connected with a roller smoothing mechanism, the smoothing roller of the roller smoothing mechanism is provided with a battery support seat opposite to the position where the battery pole ear is placed, the battery support seat is fixed to the support seat bracket, the support seat bracket is fixed on the equipment platform, and a battery detection station is provided on one side of the battery support seat.

[0006] Furthermore, the roller smoothing mechanism includes a buffer support plate, a lifting sub-plate, a linear rail, a smoothing roller bracket and a smoothing roller. The buffer support plate is vertically connected to the smoothing mechanism main board. The buffer support plate is provided with a pin hole. A hinge pin bolt is slidably fitted in the pin hole. The hinge pin bolt is sleeved with a buffer spring. The front end of the hinge pin bolt is screwed to the lifting sub-plate. The lifting sub-plate is fixedly connected to the linear rail. The linear rail is fixedly connected to the smoothing mechanism main board. The lifting sub-plate is fixedly connected to the smoothing roller bracket. A rotating shaft is supported in the support hole at the front end of the smoothing roller bracket. The rotating shaft is slidably connected to the smoothing roller.

[0007] Furthermore, there are two groups of roller-type smoothing mechanisms, which are vertically fixed to the smoothing mechanism mainboard through buffer support plates.

[0008] Furthermore, the number of the battery support seats is two groups of battery placement positions, and the battery support seats are arranged on the same axis.

[0009] Furthermore, the battery support seat is made of ceramic material.

[0010] Furthermore, a spring is sleeved on the hinge pin bolt.

[0011] Furthermore, the smoothing roller is made of ceramic material.

[0012] Furthermore, the lifting cylinder and the horizontal cylinder are slide cylinders.

[0013] Furthermore, the battery material removal mechanism includes a mounting bracket, a cylinder fixing plate, a lifting cylinder, a suction cup fixing plate and a suction cup. The mounting bracket is fixedly connected to the equipment platform of the pole ear smoothing main mechanism. A slide module is fixedly connected to the top of the mounting bracket. The front end of the slide module is fixedly connected to the cylinder fixing plate. The lifting cylinder is fixedly connected to the cylinder fixing plate. The lower end of the lifting cylinder is fixedly connected to the suction cup fixing plate. The front end of the suction cup fixing plate is fixedly connected to the suction cup. The front end of the suction cup fixing plate is provided with a long groove for adjusting the position of the suction cup, and the suction cup is fixed in the long groove.

[0014] Furthermore, two groups of lifting cylinders and suction cups are fixedly connected in parallel to the slide module via a cylinder fixing plate, and the positions of the lifting cylinders and suction cups correspond to the center position of the battery body placed on the battery support seat.

[0015] Beneficial effects: Compared with the prior art, the utility model can be used in conjunction with packaging lines, Degas, OCV, sorting machines and other equipment. Only partial modifications to the equipment's software and hardware are required to smooth out all the battery tabs passing through the production line, providing the necessary conditions for subsequent battery testing; two workstations are set up, so that the tabs of two batteries can be smoothed at the same time, better matching the current production efficiency of automated production in the industry; by adjusting the position of the buffer on the lifting cylinder and changing the pressure applied to the tab by the smoothing roller, it can adapt to tabs of different specifications and sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 yes Figure 1 The structural diagram of the battery material taking mechanism;

[0018] Figure 3 yes Figure 1 Schematic diagram of the structure of the main mechanism for smoothing the middle pole ear.

[0019] In the figure: 1. Battery material taking mechanism, 1-1. Mounting bracket, 1-2. Slide module, 1-3. Cylinder fixing plate, 1-4. Lifting cylinder, 1-5. Suction cup fixing plate, 1-5-1. Long slot, 1-6. Suction cup, 1-7 Lifting cylinder, 1-8. Suction cup fixing plate, 1-9. Suction cup, 2. Main mechanism for leveling the ear, 2-1. Equipment platform, 2-2. Lifting cylinder connecting plate, 2-3. Lifting cylinder, 2-4. Horizontal cylinder connecting plate, 2-5. Horizontal cylinder, 2-6. Main board of the leveling mechanism, 2-7. Buffer support plate, 2-8. Hinge pin bolt , 2-9, buffer spring, 2-10, lifting sub-plate, 2-11, linear track, 2-12, smoothing roller bracket, 2-13, rotating shaft, 2-14, smoothing roller, 2-15, battery support seat, 2-16, battery, 2-17, buffer support plate, 2-18, hinge pin bolt, 2-19, buffer spring, 2-20, lifting sub-plate, 2-21, linear track, 2-22, smoothing roller bracket, 2-23, rotating shaft, 2-24, smoothing roller, 2-25, battery support seat, 2-26, support seat bracket, 3, battery detection station. DETAILED DESCRIPTION

[0020] The following is a detailed description of the specific implementation method provided by the utility model in combination with the preferred embodiment: See the accompanying drawings for details. This embodiment provides a soft-pack lithium battery tab flattening mechanism, including a battery material picking mechanism and a tab flattening main mechanism. The tab flattening main mechanism is arranged in front of the battery material picking mechanism, and the tab flattening main mechanism is fixed to the front of the battery material picking mechanism. The tab flattening main mechanism includes an equipment platform, a lifting cylinder connecting plate, a lifting cylinder, a horizontal cylinder connecting plate, a horizontal cylinder, a flattening mechanism mainboard, a flattening roller, a battery support seat and a support seat bracket. The lifting cylinder connecting plate is fixedly connected to the equipment platform, the lifting cylinder is fixedly connected to the lifting cylinder connecting plate, the lifting cylinder is connected to the horizontal cylinder connecting plate, the horizontal cylinder connecting plate is fixedly connected to the horizontal cylinder, the horizontal cylinder is fixedly connected to the smoothing mechanism mainboard, the smoothing mechanism mainboard is connected with a roller-type smoothing mechanism, the smoothing roller of the roller-type smoothing mechanism is provided with a battery support seat opposite to the position where the battery pole ear is placed, the battery support seat is fixedly connected to the support seat bracket, the support seat bracket is fixedly connected to the equipment platform, and a battery detection station is provided on one side of the battery support seat.

[0021] The preferred solution of this embodiment is that the roller smoothing mechanism includes a buffer support plate, a lifting sub-plate, a linear rail, a smoothing roller bracket and a smoothing roller, the buffer support plate is vertically connected to the smoothing mechanism main board, the buffer support plate is provided with a pin hole, a hinge pin bolt is slidably fitted in the pin hole, the hinge pin bolt is sleeved with a buffer spring, the front end of the hinge pin bolt is screwed to the lifting sub-plate, the lifting sub-plate is fixedly connected to the linear rail, the linear rail is fixedly connected to the smoothing mechanism main board, the lifting sub-plate is fixedly connected with a smoothing roller bracket, the support hole at the front end of the smoothing roller bracket supports a rotating shaft, and the rotating shaft is slidably connected to the smoothing roller.

[0022] A preferred solution of this embodiment is that the roller-type smoothing mechanisms are provided in two groups, which are respectively vertically fixed to the smoothing mechanism main board via a buffer support plate.

[0023] A preferred solution of this embodiment is that the number of the battery support seats is two groups of battery placement positions, and the battery support seats are arranged on the same axis.

[0024] A preferred solution of this embodiment is that the battery support seat is made of ceramic material.

[0025] A preferred solution of this embodiment is that a spring is sleeved on the hinge pin bolt.

[0026] A preferred solution of this embodiment is that the smoothing roller is made of ceramic material.

[0027] The preferred solution of this embodiment is that the lifting cylinder and the horizontal cylinder are sliding cylinders.

[0028] The preferred solution of this embodiment is that the battery picking mechanism includes a mounting bracket, a cylinder fixing plate, a lifting cylinder, a suction cup fixing plate and a suction cup, the mounting bracket is fixedly connected to the equipment platform of the pole ear smoothing main mechanism, a slide module is fixedly connected to the top of the mounting bracket, a cylinder fixing plate is fixedly connected to the front end of the slide module, a lifting cylinder is fixedly connected to the cylinder fixing plate, the lower end of the lifting cylinder is fixedly connected to the suction cup fixing plate, the front end of the suction cup fixing plate is fixedly connected to the suction cup, the front end of the suction cup fixing plate is provided with a long groove 1-5-1 for adjusting the position of the suction cup, and the suction cup is fixed in the long groove.

[0029] The preferred solution of this embodiment is that two sets of lifting cylinders and suction cups are fixedly connected in parallel to the slide module through a cylinder fixing plate, and the positions of the lifting cylinders and suction cups correspond to the center position of the battery body placed on the battery support seat.

[0030] The structure of this embodiment is described in detail with reference to the accompanying drawings

[0031] A soft-pack lithium battery tab flattening mechanism, which consists of two parts, including a battery material taking mechanism 1 placed above an equipment platform 2-1 and a tab flattening main mechanism 2 arranged in front of the battery material taking mechanism;

[0032] See Figure 2 for details. The battery picking mechanism 1 is provided with a mounting bracket 1-1, a slide module 1-2 in front of the mounting bracket, a cylinder fixing plate 1-3 connected in front of the slide module, a lifting cylinder 1-4 arranged in front of the cylinder fixing plate, a suction cup fixing plate 1-5 fixedly connected below the lifting cylinder, a suction cup 1-6 on the long hole of the suction cup fixing plate, another group of lifting cylinders 1-7 symmetrically arranged with the lifting cylinder 1-4 in front of the cylinder fixing plate, a suction cup fixing plate 1-8 below the lifting cylinder 1-7, and a suction cup 1-9 fixedly connected to the long hole of the suction cup fixing plate; the suction cup of this embodiment adopts commercially available standard parts, such as: SZU16N-EI10-M10; the slide module of this embodiment adopts commercially available standard parts, such as: KKR60C-400-F0S2.

[0033] See Figure 3 for details. A pole lug smoothing main mechanism 2 is arranged in front of the battery feeding mechanism 1. The pole lug smoothing main mechanism 2 is provided with a lifting cylinder connecting plate 2-2, a lifting cylinder 2-3 fixed on the side of the lifting cylinder connecting plate, a horizontal cylinder connecting plate 2-4 fixed to the push rod at the upper end of the lifting cylinder, a horizontal cylinder 2-5 fixed to the horizontal cylinder connecting plate, a smoothing mechanism main board 2-6 fixed to the push plate on the right side of the horizontal cylinder, a buffer support plate 2-7 bolted to the upper front side of the smoothing mechanism main board, a hinge pin bolt 2-8 slidably connected to the pin hole of the buffer support plate, a buffer spring 2-9 is mounted on the hinge pin bolt, and the front end is screwed to the lifting sub-plate 2-10, which plays a role in pulling the lifting sub-plate and guiding the spring during the roller smoothing operation. The lifting sub-plate is fixedly connected to the linear track 2-11, and the lifting sub-plate is fixedly connected with a smoothing roller bracket 2-12, and a rotating shaft 2-13 is supported below the smoothing roller bracket, and a smoothing roller 2-14 is installed on the rotating shaft, and a battery support seat 2-15 and a battery 2-16 are located below the smoothing roller, and a support seat bracket 2-26 is fixed below the support seat, and another set of buffer support plates 2-17 is vertically fixed to the main board of the smoothing mechanism, and a hinge pin bolt 2-18 is slidably connected to the pin hole of the buffer support plate, and a buffer spring 2-19 is installed on the hinge pin bolt, and the spring is mainly used to stabilize the pressure of the smoothing roller pressing on the pole ear. The lower end of the hinge pin bolt is screwed with a lifting sub-plate 2-20, the lifting sub-plate is fixed to the linear rail 2-21, the lifting sub-plate is fixed to a smoothing roller bracket 2-22, a rotating shaft 2-23 is supported below the smoothing roller bracket, a smoothing roller 2-24 is slidably connected to the rotating shaft, and a battery support seat 2-25 and a battery 2-16 are located below the smoothing roller; a battery inspection station 3 is provided by the production line on one side of the battery support seat, and the electrical operations of several actuator cylinders belong to conventional techniques and will not be repeated here.

[0034] The lifting cylinder of the battery material taking mechanism and the lifting cylinder and horizontal cylinder of the main flattening mechanism of this embodiment adopt a slide cylinder. Slide cylinder HLQL20X30SB0DMSHN2 Brand: AirTac

[0035] Working process:

[0036] 1. The battery to be tested flows to the tab flattening station in the equipment production line, and the battery is placed on the support seat;

[0037] 2. The sliding platform of the slide module of the battery material removal mechanism moves to the tab flattening station, and the two lifting cylinders descend at the same time, so that the suction cup presses the battery, and the pipeline connected to the suction cup is evacuated to form a negative pressure in the suction cup to fix the battery firmly;

[0038] 3. After the lifting cylinder of the tab flattening main mechanism rises to the upper limit, the horizontal cylinder extends to the right limit, and the lifting cylinder descends to the lower limit. At this time, the flattening roller presses the battery tab on the battery support seat, and the horizontal cylinder retracts to the left limit, so that the flattening roller rolls along the length direction of the tab, thereby flattening the tab;

[0039] 4. The lifting cylinder of the battery picking mechanism rises and sucks up the battery with the tabs flattened. The sliding platform of the slide module moves to the battery inspection station. After it is in place, the lifting cylinder descends, the suction cup pipeline stops vacuuming, and the battery is placed on the inspection station. The lifting cylinder rises, and the sliding platform of the slide module returns to the tab flattening station again. At this time, one action cycle is completed and ready to start a new cycle.

[0040] Key technical points of this utility model:

[0041] 1. In order to ensure the lug smoothing effect, the commonly used guide rod cylinder is not used in the cylinder selection, but a slide cylinder with higher action accuracy and higher rigidity is used, which can ensure the overall rigidity and stability of the mechanism during action, and avoid the poor lug smoothing effect caused by the deformation of the mechanism. The slide cylinder is provided with a buffer. By adjusting the buffer position on the lifting cylinder, the pressure applied by the smoothing roller to the lug can be changed, which can adapt to lugs of different specifications and sizes;

[0042] 2. The scraper structure that contacts the tabs has been optimized. The original scraper has been replaced with a smoothing roller. The smoothing roller can roll along the length of the tabs during smoothing, thereby converting the sliding friction into rolling friction, greatly reducing the friction on the tabs and preventing the tabs from being scratched. At the same time, the material has been changed from nylon to ceramic, which has higher hardness and lower roughness, thus increasing the service life of the smoothing roller and further reducing friction.

[0043] 3. A spring buffer device is provided to ensure that the pressure applied by the smoothing roller to the tab is stable, and the tab will not be separated from the battery body or the smoothing effect will not be poor due to excessive or insufficient pressure;

[0044] 4. The battery support seat was originally made of nylon. When the tab was flattened, the position of the support seat supporting the tab was repeatedly crushed by the tab and the flattening roller, and indentations were easily formed on the surface of the support seat, resulting in marks on the surface of the tab. The material of the support seat was changed to ceramic. Ceramics have high hardness and can avoid marks on the surface of the tab due to indentations. The support seat is designed as an L-shaped structure. The height difference between the position supporting the tab and the position supporting the battery is half the thickness of the battery, which can ensure that the tab is in a horizontal state after being flattened.

[0045] The detailed description of a soft-pack lithium battery tab flattening mechanism with reference to the above embodiment is illustrative rather than restrictive, and several embodiments can be listed according to the limited scope. Therefore, changes and modifications without departing from the overall concept of the utility model should fall within the scope of protection of the utility model.

Claims

1. A soft-pack lithium battery tab flattening mechanism, characterized by: It includes a battery picking mechanism and a main lug smoothing mechanism. The main lug smoothing mechanism is arranged in front of the battery picking mechanism, and the main lug smoothing mechanism is placed in front of the battery picking mechanism. The main lug smoothing mechanism includes an equipment platform, a lifting cylinder connecting plate, a lifting cylinder, a horizontal cylinder connecting plate, a horizontal cylinder, a smoothing mechanism mainboard, a smoothing roller, a battery support seat and a support seat bracket. The lifting cylinder connecting plate is fixedly connected to the equipment platform, the lifting cylinder is fixedly connected to the lifting cylinder connecting plate, the lifting cylinder is connected to the horizontal cylinder connecting plate, the horizontal cylinder connecting plate is fixedly connected to the horizontal cylinder, the horizontal cylinder is fixedly connected to the smoothing mechanism mainboard, the smoothing mechanism mainboard is connected with a roller-type smoothing mechanism, and a battery support seat is provided at the position where the battery lug is placed with the smoothing roller of the roller-type smoothing mechanism, the battery support seat is fixedly connected to the support seat bracket, the support seat bracket is fixedly connected to the equipment platform, and a battery detection station is provided on one side of the battery support seat.

2. The soft-pack lithium battery tab flattening mechanism according to claim 1, characterized in that: The roller smoothing mechanism includes a buffer support plate, a lifting sub-plate, a linear rail, a smoothing roller bracket and a smoothing roller. The buffer support plate is vertically connected to the smoothing mechanism main board. The buffer support plate is provided with a pin hole. A hinge pin bolt is slidably fitted in the pin hole. The hinge pin bolt is sleeved with a buffer spring. The front end of the hinge pin bolt is screwed to the lifting sub-plate. The lifting sub-plate is fixedly connected to the linear rail. The linear rail is fixedly connected to the smoothing mechanism main board. The lifting sub-plate is fixedly connected to the smoothing roller bracket. A rotating shaft is supported in the support hole at the front end of the smoothing roller bracket. The rotating shaft is slidably connected to the smoothing roller.

3. The soft-pack lithium battery tab flattening mechanism according to claim 1 or 2, characterized in that: The roller type smoothing mechanism comprises two groups, which are respectively fixed vertically to the smoothing mechanism main board through a buffer support plate.

4. The soft-pack lithium battery tab flattening mechanism according to claim 1, characterized in that: The number of the battery support seats is two groups of battery placement positions, and the battery support seats are arranged on the same axis.

5. The soft-pack lithium battery tab flattening mechanism according to claim 1 or 4, characterized in that: The battery support seat is made of ceramic material.

6. The soft-pack lithium battery tab flattening mechanism according to claim 2, characterized in that: A spring is sleeved on the hinge pin bolt.

7. The soft-pack lithium battery tab flattening mechanism according to claim 1 or 2, characterized in that: The smoothing roller is made of ceramic material.

8. The soft-pack lithium battery tab flattening mechanism according to claim 1, characterized in that: The lifting cylinder and the horizontal cylinder are slide cylinders.

9. The soft-pack lithium battery tab flattening mechanism according to claim 1, characterized in that: The battery material removal mechanism includes a mounting bracket, a cylinder fixing plate, a lifting cylinder, a suction cup fixing plate and a suction cup. The mounting bracket is fixedly connected to the equipment platform of the main mechanism for smoothing the pole ear. A slide module is fixedly connected to the top of the mounting bracket. A cylinder fixing plate is fixedly connected to the front end of the slide module. A lifting cylinder is fixedly connected to the cylinder fixing plate. The lower end of the lifting cylinder is fixedly connected to the suction cup fixing plate. The front end of the suction cup fixing plate is fixedly connected to the suction cup. A long groove for adjusting the position of the suction cup is provided at the front end of the suction cup fixing plate, and the suction cup is fixed in the long groove.

10. The soft-pack lithium battery tab flattening mechanism according to claim 9, characterized in that: The slide module is fixedly connected in parallel with two groups of lifting cylinders and suction cups via a cylinder fixing plate, and the positions of the lifting cylinders and suction cups correspond to the center position of the battery body placed on the battery support seat.

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