A polymer battery packaging line

Abstract

The application relates to a polymer battery packaging line which comprises an electric core feeding unit, an aluminum film forming unit, an electric core packaging unit and a film pasting unit; the electric core feeding unit is used for conveying and detecting electric cores; the aluminum film forming unit is used for pit forming of aluminum plastic film; the electric core packaging unit is connected with the electric core feeding unit and the aluminum film forming unit respectively and is used for placing the detected electric cores into the pit-formed aluminum plastic film and packaging; the film pasting unit is connected with the electric core packaging unit and is used for pasting a protective film on the surface of the battery packaged by the electric core packaging unit; the application integrates the electric core partial packaging process, simplifies manual operation links, improves battery production efficiency; after the electric core feeding is completed, recycling is realized through the moving of an empty tray to realize cyclic feeding and improve production capacity; electric core detection is arranged to improve product yield and consistency; the battery packaging line can be matched with different battery products through adjustment of a tray and other jigs, and has high compatibility.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery manufacturing, in particular to a polymer battery packaging line. BACKGROUND

[0002] Polymer power batteries have high energy density and good safety, and are widely used in the field of new energy. In the production process of polymer power batteries, a series of operations such as cell feeding, aluminum film processing, film pasting, side sealing and discharging are required. In the existing production process, the processing stations of polymer batteries are more, the station arrangement is more dispersed, and the layout is not reasonable enough. Part of the process flow needs to be operated manually, which affects the production efficiency and product yield. The existing packaging production line cannot meet the capacity requirements of process production. SUMMARY

[0003] Therefore, the technical problem to be solved by the present application is to overcome the technical difficulties of the dispersion of the polymer battery packaging production line in the prior art and the low production efficiency of traditional manual packaging, and to provide a polymer battery packaging line which can be compatible with a certain range of products, save labor cost and product yield, and has high automation degree.

[0004] To solve the above technical problems, the present application provides a polymer battery packaging line, which comprises,

[0005] A cell feeding unit for conveying and detecting the cell;

[0006] An aluminum film forming unit for pit forming of the aluminum plastic film;

[0007] A cell packaging unit connected with the cell feeding unit and the aluminum film forming unit, respectively, for placing the detected cell into the pit-formed aluminum plastic film and packaging;

[0008] A film pasting unit connected with the cell packaging unit for pasting a protective film on the surface of the battery packaged by the cell packaging unit.

[0009] In an embodiment of the present application, the cell packaging unit comprises a top cutting assembly, a pit folding assembly, a packaging detection assembly and a side sealing cutting assembly arranged in sequence, the top cutting assembly is connected with the aluminum film forming unit for top cutting of the aluminum plastic film, and the cut aluminum plastic film is conveyed to the pit folding assembly to cover the surface of the bare cell.

[0010] In an embodiment of the present application, the top cutting assembly comprises at least two cutting tables arranged oppositely, the gap between the cutting tables forms a cutting groove, the top cutting assembly further comprises a cutter arranged directly above the cutting groove, the cutter is connected with a cutting driving source, and the cutting driving source drives the cutter to reciprocate in the vertical direction.

[0011] In one embodiment of the present application, the folding-in-the-pit assembly comprises at least one pair of rotating mechanisms, which are oppositely arranged, and a placing platform is arranged between the rotating mechanisms, the placing platform is used for placing the finished aluminum-plastic film, and the aluminum-plastic film is tightly attached to the battery cell when the placing platform rotates with the rotating mechanisms.

[0012] In one embodiment of the present application, the packaging detection assembly comprises a top sealing station, a side sealing station, a corner sealing station and a short circuit detection station arranged in sequence along the running direction of the polymer battery packaging line.

[0013] In one embodiment of the present application, the film pasting unit comprises a material placing rack, a rotating disc and a film pasting station, the material placing rack is used for unwinding a protective film material strip, one end of the protective film material strip is wound on a material roll, the other end is connected to the rotating disc, and the film pasting station is arranged on the outer periphery of the rotating disc.

[0014] In one embodiment of the present application, the film pasting unit further comprises a material unloading gripper and a material unloading transfer mechanism, the material unloading transfer mechanism is arranged on one side of the film pasting station, and the extension direction of the material unloading transfer mechanism is perpendicular to the unwinding direction of the protective film material strip; the material unloading gripper contacts the film pasting station and clamps the battery to reciprocate on the material unloading transfer mechanism.

[0015] In one embodiment of the present application, the battery cell feeding unit comprises two parallel transmission lines, the two transmission lines comprise a feeding transmission line and a tray transmission line with opposite transmission directions; the end of the transmission direction of the feeding transmission line is connected to a battery cell transfer mechanism, and the beginning of the transmission direction of the tray transmission line is connected to a tray transfer mechanism.

[0016] In one embodiment of the present application, it further comprises a battery cell detection unit, two ends of the battery cell detection unit are respectively connected to the battery cell transfer mechanism and the battery cell packaging unit; the battery cell detection unit is used for detecting the fed battery cell and transferring the battery cell to the battery cell packaging unit.

[0017] In one embodiment of the present application, the aluminum film forming unit comprises a unwinding assembly, a pit forming assembly and an opening assembly arranged in sequence along the aluminum film feeding direction.

[0018] The above technical solutions of the present application have the following advantages compared with the prior art:

[0019] The polymer battery packaging line integrates the feeding, detection, entering into the pit of the battery cell, the stamping, covering and battery film pasting process of the aluminum plastic film, has high automation degree, simplifies the manual operation link compared with the existing production line, improves the battery production capacity and production efficiency; after the feeding of the battery cell is completed, the recycling of the empty tray is realized through the transfer to improve the production capacity; the battery cell detection and short circuit detection are set to improve the product yield and consistency; the battery packaging line can be matched with different battery products by adjusting the jig such as the tray, is suitable for various battery models, and has strong compatibility. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the content of the application more easily and clearly understood, the application will be further described in detail below according to specific embodiments of the application and in conjunction with the drawings, in which:

[0021] Figure 1 is a top view of the polymer battery packaging line in the preferred embodiment of the application;

[0022] Figure 2 is a structural schematic view of the battery cell feeding unit in the preferred embodiment of the application;

[0023] Figure 3 is a structural schematic view of the aluminum film forming unit in the preferred embodiment of the application;

[0024] Figure 4 is a partial structural schematic view of the battery cell packaging unit in the preferred embodiment of the application;

[0025] Figure 5 is another partial structural schematic view of the battery cell packaging unit shown in the preferred embodiment of the application; Figure 4

[0026] Figure 6 is a structural schematic view of the film pasting unit in the preferred embodiment of the application.

[0027] The description of the drawing symbols of the specification is as follows: 1, battery cell feeding unit; 11, feeding conveying line; 12, tray conveying line; 13, battery cell transfer mechanism; 14, tray transfer mechanism; 2, battery cell detection unit; 3, aluminum film forming unit; 31, unwinding assembly; 311, unwinding roller; 32, pit forming assembly; 33, wire opening assembly; 4, battery cell packaging unit; 41, top cutting assembly; 42, pit folding assembly; 43, top sealing station; 44, side sealing station; 45, corner sealing station; 46, short circuit detection station; 47, side sealing cutting assembly; 5, film pasting unit; 51, material rack; 52, turntable; 53, film pasting station; 54, protective film material belt; 55, discharging gripper; 56, discharging transfer mechanism. DETAILED DESCRIPTION

[0028] ​The application will be further described below with reference to the drawings and specific embodiments so that those skilled in the art can better understand the application and implement it, but the embodiments are not limiting to the application.

[0029] Embodiments

[0030] Referring to Figure 1 The application provides a polymer battery packaging line, which comprises an electric core feeding unit 1, an electric core detection unit 2, an aluminum film forming unit 3, an electric core packaging unit 4 and a film pasting unit 5. The electric core feeding unit 1 is used for feeding bare electric cores. The bare electric cores are detected by the electric core detection unit 2 and then enter the electric core packaging unit 4. The electric core packaging unit 4 further comprises an aluminum plastic film formed by the aluminum film forming unit 3. The aluminum plastic film is wrapped on the outer layer of the bare electric core. The electric core packaging unit 4 is used for packaging and detecting the bare electric core. The packaged battery semi-finished product is conveyed into the film pasting unit 5 to paste a protective film, thereby completing the partial packaging operation of the battery production line. The application has high integration and good automation. The cycle feeding of the bare electric core can be realized. The electric core feeding and detection are simultaneously performed with the aluminum film stamping and forming, thereby improving the production efficiency.

[0031] Specifically, referring to Figure 1 and Figure 2 The electric core feeding unit 1 is used for conveying the bare electric core. The electric core feeding unit 1 comprises two parallel conveying lines, i.e. a feeding conveying line 11 and a tray conveying line 12 with opposite conveying directions. In some embodiments, the feeding conveying line 11 is selected as a feeding belt, and the tray conveying line 12 is selected as a lower empty tray belt. The feeding of the bare electric core is realized by using the synchronous belt to convey the tray, so that the polymer battery packaging line has higher compatibility. When the production line is changed, only the tray jig needs to be replaced, thereby improving the production capacity. One end of the feeding conveying line 11 is provided with a tray containing the bare electric core. The end of the feeding conveying line 11 is connected with an electric core transfer mechanism 13 to unload and transfer the bare electric core. The empty tray enters a tray transfer mechanism 14. One end of the tray transfer mechanism 14 is connected with the tray conveying line 12 to transfer the empty tray to a standby position, thereby realizing the cycle feeding of the bare electric core. In some embodiments, the electric core transfer mechanism 13 and the tray transfer mechanism 14 adopt a servo module or a pneumatic cylinder conveying mode.

[0032] Further, referring to Figure 1 The polymer battery packaging line further comprises an electric core detection unit 2. Two ends of the electric core detection unit 2 are connected with the electric core transfer mechanism 13 and the electric core packaging unit 4, respectively. The electric core detection unit 2 is used for detecting the quality of the fed electric core and transferring the bare electric core passing the detection to the electric core packaging unit 4 for pit packaging.

[0033] Specifically, aluminum material has good barrier property, cold stamping forming property and insulation property, and the nature of aluminum is relatively stable, and it is not easy to react with electrolyte, so the polymer battery usually uses aluminum film for packaging, and the size of the finished thin film aluminum material is larger, so when the surface of the bare battery is packaged, the aluminum film needs to be punched and cut first to facilitate subsequent packaging. Referring to Figure 1 and Figure 3 As shown, the aluminum film forming unit 3 includes unwinding assembly 31, punching forming assembly 32 and opening assembly 33 arranged in turn along the aluminum film feeding direction. The unwinding assembly 31 includes a plurality of parallel arranged unwinding rollers 311, the unwound aluminum film strip passes through the unwinding rollers 311 in turn, the transmission direction of the aluminum film is changed by the setting position of the unwinding rollers 311, and the unwinding rollers 311 rotate to transmit the aluminum film to the punching forming assembly 32.

[0034] Further, referring to Figure 3 As shown, the punching forming assembly 32 includes a frame, a punching plate is arranged in the middle of the frame, the aluminum film discharged from the unwinding assembly 31 is transmitted to the surface of the punching plate, the punching plate is provided with positioning columns at the four corners, the frame is provided with a pressing block at the top, the pressing block is connected with a punching driving device, the punching driving device drives the pressing block to move vertically downward to close the mold with the punching plate, the punching plate is provided with a avoiding groove corresponding to the position of the pressing block, and the aluminum film is formed by punching after closing the mold, and the aluminum plastic film to be packaged is obtained by opening the line through the opening assembly 33. It should be noted that in this embodiment, the aluminum film forming unit 3 and the battery cell feeding unit 1 work at the same time, and are arranged on one side of the battery cell packaging unit 4, which facilitates the feeding of the packaging and detection link, makes the battery packaging line station more reasonable, and improves the production capacity.

[0035] Specifically, referring to Figure 4 and Figure 5 As shown, the battery cell packaging unit 4 includes top cutting assembly 41, pit folding assembly 42, packaging and detection assembly and side sealing cutting assembly 47 connected and arranged in turn, the top cutting assembly 41 is connected with the aluminum film forming unit 3, and is used for top cutting of the aluminum plastic film, the aluminum plastic film after cutting is transmitted to the pit folding assembly 42 for covering the bare battery cell; the top cutting assembly 41 includes at least two oppositely arranged cutting tables, the gap between the cutting tables forms a cutting groove, the top cutting assembly 41 further includes a cutter arranged directly above the cutting groove, the cutting groove provides space for the cutter to fall, and the cutter is connected with a cutting driving source, and the cutting driving source drives the cutter to reciprocate in the vertical direction.

[0036] Further, the folding into the pit assembly 42 comprises at least one pair of rotating mechanisms, the rotating mechanisms are oppositely arranged, and a placing platform is arranged between the rotating mechanisms, the placing platform is used for placing the aluminum plastic film after punching, opening and top cutting, when the placing platform rotates with the rotating mechanism, the aluminum plastic film contacts the electric core, and the aluminum plastic film after punching can be tightly attached to the surface of the bare electric core, in the folding process of the placing platform, the aluminum plastic film is wrapped outside the bare electric core and waits for subsequent edge sealing.

[0037] Further, the packaging detection assembly comprises a top sealing station 43, a side sealing station 44, a corner sealing station 45 and a short circuit detection station 46 arranged in sequence along the running direction of the polymer battery packaging line; the top sealing station 43, the side sealing station 44 and the corner sealing station 45 are respectively provided with a heat sealing piece and a first driving mechanism, the first driving mechanism in the top sealing station 43 and the corner sealing station 45 can drive the heat sealing piece to move in the vertical direction, when the electric core is conveyed to the heat sealing position along the running direction of the packaging line, the driving mechanism drives the heat sealing piece to press and cover the top surface and the upper and lower corner of the electric core; the side sealing station 44 is also provided with a second driving mechanism, the second driving mechanism can drive the heat sealing piece to press and cover the side of the electric core along the conveying direction of the electric core. The arrangement of the top sealing station 43, the side sealing station 44 and the corner sealing station 45 makes the packaging link more efficient and improves the packaging precision.

[0038] Specifically, referring to FIGS. 5 and 6, Figure 1 and Figure 6 The film pasting unit 5 is connected to the electric core packaging unit 4 and is used for pasting a protective film on the surface of the battery packaged by the electric core packaging unit 4. The film pasting unit 5 comprises a material placing rack 51, a rotating disc 52 and a film pasting station 53, the material placing rack 51 is used for unwinding a protective film material belt 54, one end of the protective film material belt 54 is wound on a material roll, and the other end is connected to the rotating disc 52, and the film pasting station 53 is arranged on the outer periphery of the rotating disc 52. Further, the film pasting unit 5 further comprises a material discharging gripper 55 and a material discharging transfer mechanism 56, the material discharging transfer mechanism 56 is arranged on one side of the film pasting station 53, and the extension direction of the material discharging transfer mechanism 56 is perpendicular to the unwinding direction of the protective film material belt 54; the material discharging gripper 55 contacts the film pasting station 53 and clamps the battery after film pasting, when the material discharging gripper 55 moves to the end of the material discharging transfer mechanism 56 away from the film pasting station, the clamping jaws of the material discharging gripper 55 are opened to complete the material discharging, and the material discharging gripper 55 is driven to reciprocate on the material discharging transfer mechanism 56 to realize the transfer of the battery. After the battery is pasted with the protective film, the battery is conveyed to other processes by the material discharging transfer mechanism 56.

[0039] Obviously, the above embodiments are merely example for clearly illustrating, and are not limitation to the embodiments. Other different forms of changes or variations can be made on the basis of the above description for those skilled in the art. Here, all the embodiments need not and can not be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A polymer battery packaging line, characterized in that, The system includes: a cell loading unit for conveying and inspecting cells; an aluminum film forming unit for punching and forming aluminum-plastic film; a cell packaging unit connected to both the cell loading unit and the aluminum film forming unit for placing the inspected cells into the punched aluminum-plastic film and packaging them; and a film application unit connected to the cell packaging unit for applying a protective film to the surface of the battery after packaging. The cell packaging unit includes a top cutting component, a punching and folding component, a packaging inspection component, and a side sealing cutting component connected in sequence. The top cutting component is connected to the aluminum film forming unit for cutting the top of the aluminum-plastic film, and the cut aluminum-plastic film is conveyed to the punching and folding component to cover the surface of the bare cell. The top cutting assembly includes at least two oppositely arranged cutting platforms, the gap between the cutting platforms forming a cutting groove. The top cutting assembly also includes a cutter disposed directly above the cutting groove. The cutter is connected to a cutting drive source, which drives the cutter to reciprocate in the vertical direction. The pit-entry folding assembly includes at least a pair of rotating mechanisms, which are oppositely arranged. A placement platform is disposed between the rotating mechanisms. The placement platform is used to place the cut aluminum-plastic film. When the placement platform rotates with the rotating mechanism, the aluminum-plastic film is in close contact with the battery cell. The film application unit includes a feeding rack, a turntable, and a film application station. The feeding rack is used to feed the protective film strip. One end of the protective film strip is wound into the roll, and the other end is connected to the turntable. The film application station is located on the outer periphery of the turntable. The film application unit also includes a feeding gripper and a feeding transfer mechanism. The feeding transfer mechanism is located on one side of the film application station, and its extension direction is perpendicular to the unwinding direction of the protective film strip. The feeding gripper contacts the film application station and clamps the battery, reciprocating on the feeding transfer mechanism.

2. The polymer battery packaging line according to claim 1, characterized in that: The packaging and testing assembly includes a top sealing station, a side sealing station, a corner sealing station, and a short-circuit testing station arranged sequentially along the running direction of the polymer battery packaging line.

3. The polymer battery packaging line according to claim 1, characterized in that: The cell loading unit includes two parallel conveyor lines, one of which is a loading conveyor line and the other is a tray conveyor line with opposite conveying directions. The end of the loading conveyor line in the conveying direction is connected to a cell transfer mechanism, and the beginning of the tray conveyor line in the conveying direction is connected to a tray transfer mechanism.

4. A polymer battery packaging line according to claim 3, characterized in that: It also includes a cell detection unit, the two ends of which are connected to the cell transfer mechanism and the cell packaging unit, respectively; the cell detection unit is used to detect the loaded cells and transfer them to the cell packaging unit.

5. A polymer battery packaging line according to claim 1, characterized in that: The aluminum film forming unit includes an unwinding assembly, a punching and forming assembly, and a wire opening assembly arranged sequentially along the aluminum film feeding direction.

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