CN219203240U

CN219203240U - Soft packet of electric core die press forming cuts system

Info

Publication number: CN219203240U
Application number: CN202320135938.9U
Authority: CN
Inventors: 袁建军
Original assignee: Hubei Jianneng New Energy Technology Co ltd
Current assignee: Hubei Jianneng New Energy Technology Co ltd
Priority date: 2023-02-07
Filing date: 2023-02-07
Publication date: 2023-06-16
Anticipated expiration: 2033-02-07

Abstract

The utility model discloses a soft package battery cell compression molding cutting system, which comprises a cold and hot molding device (100) and a die cutting liquid extracting device (110), wherein the cold and hot molding device (100) comprises a molding frame (1), and a rotating disc (2), a cold pressing mold (3) and a hot pressing mold (4) which are arranged in the molding frame (1), and the soft package battery cell compression molding cutting system has the advantages that: (1) the supporting plate and the upper template are matched to perform heat exchange on the battery cell up and down at the same time, so that the heat conduction efficiency and uniformity are improved, and the heat insulation cover can effectively reduce the energy loss of heat conduction; (2) the die cutting and electrolyte pumping are integrated, redundant electrolyte can be pumped away while the battery cell is cut, electrolyte is prevented from overflowing and adhering to the surface of the battery cell during process switching, and the processing efficiency and the processing quality are improved.

Description

Soft packet of electric core die press forming cuts system

Technical Field

The utility model relates to the technical field of battery production, in particular to a soft package battery cell compression molding and cutting system.

Background

At present, along with the wide use of electric vehicles, the demand of batteries is rapidly increased, in the process of forming electric cores of lithium batteries, soft package electric cores are required to be sequentially subjected to cold and hot press forming and die cutting liquid extraction procedures, the existing forming procedures have the following problems that (1) the electric cores are usually placed into a die through a tray in the cold and hot press process, so that the upper part and the lower part of the electric cores are not uniform enough in heat conduction, and meanwhile, the heat exchange medium energy loss is serious due to incomplete sealing in the cold and hot press process. (2) During die cutting, the battery cell is firstly cut, then the battery cell enters a vacuumizing device to suck out redundant electrolyte, the process is relatively complex, and the electrolyte is easy to overflow and adhere to the surface of the battery cell during switching of two working procedures, so that the processing quality of the battery cell is affected.

Disclosure of Invention

The utility model aims to overcome the defects and provide a soft package cell molding and cutting system.

The utility model comprises a cold and hot press forming device and a die cutting liquid extracting device,

the cold and hot press forming device comprises a forming frame, a rotating disc, a cold press die and a hot press die, wherein the rotating disc, the cold press die and the hot press die are arranged in the forming frame, and three supporting plates matched with the cold press die and the hot press die are arranged on the rotating disc in an annular array manner;

the die-cutting liquid extracting device comprises a rotary table, a die-cutting frame and a cutting die, wherein a pair of cell positioning plates are symmetrically arranged on a movable plate of the rotary table, a cutting plate and a liquid collecting plate are respectively arranged on the cell positioning plates, an adjustable positioning plate is arranged on the cutting plate, a pair of air sucking pumps opposite to the liquid collecting plate are arranged at the bottom of the movable plate of the rotary table, liquid draining holes communicated with the air sucking pumps are formed in the liquid collecting plate, and the cutting die is arranged on the die-cutting frame and is positioned above the rotary table;

the front sides of the forming frame and the die-cutting frame are provided with a communicated object placing table.

The cold pressing die and the hot pressing die comprise an upper die plate and a lower die plate, the upper die plate is movably arranged at the inner top of the forming frame through an upper die plate driving oil cylinder, the lower die plate is arranged at the inner bottom of the forming frame through a lower die holder, a heat preservation cover is arranged on the upper die plate, and a supporting plate avoiding gap is arranged between the upper die plate and the lower die plate; the support plate is provided with a lower heat exchange channel, the upper template is provided with an upper heat exchange channel, and the forming frames corresponding to the cold pressing mold and the hot pressing mold are respectively provided with heat exchange medium connectors matched with the lower heat exchange channel;

the rotating disc is an electric rotating disc, and a heat insulation plate is arranged at the top of the forming frame between the cold pressing die and the hot pressing die; the lower die base is provided with a lower die plate driving oil cylinder for driving the lower die plate to move up and down.

The lower heat exchange channel and the upper heat exchange channel are both S-shaped, the left side and the right side of the supporting plate are both provided with baffle plates, the baffle plates on the two sides are provided with heat exchange ports communicated with the two ends of the lower heat exchange channel, and the heat exchange medium joint is communicated with the heat exchange ports for heat exchange medium conveying; the heat exchange medium joint is movably arranged on the forming frame through the linear sliding table.

The top of the forming frame corresponding to the cold pressing die and the hot pressing die is respectively provided with a group of guide rods, the upper die plate is provided with a group of guide sleeves matched with the guide rods, and the upper die plate is movably connected with the forming frame through the matching of the guide rods and the guide sleeves.

The cutting die comprises a sealing plate matched with the battery cell positioning disc and a die cutting seat matched with the cutting plate, the sealing plate is movably arranged on the die cutting frame through a pair of lifting cylinders, a die cutting seat avoiding hole is formed in the sealing plate, a punch is arranged at the bottom of the die cutting seat, and the die cutting seat is movably arranged on the sealing plate through a pair of die cutting cylinders; the height of the cutting plate is higher than that of the liquid collecting disc, a group of tooth-shaped clamping grooves are respectively arranged on two sides of the cutting plate, and plug-in blocks matched with the tooth-shaped clamping grooves for use are respectively arranged at two ends of the adjustable positioning plate.

The die cutting seat is provided with a pre-pressing plate, the bottom of the die cutting seat is provided with a pre-pressing plate mounting groove, and the pre-pressing plate is movably mounted in the groove through a group of guide rods; the bottom of the sealing plate is provided with a circle of sealing strips matched with the edge opening of the battery cell positioning disc.

The fixed disk of the rotary table is provided with a liquid collecting groove communicated with the liquid outlet of the air pump.

The utility model has the advantages that: (1) the supporting plate and the upper template are matched to perform heat exchange on the battery cell up and down at the same time, so that the heat conduction efficiency and uniformity are improved, and the heat insulation cover can effectively reduce the energy loss of heat conduction; (2) the die cutting and electrolyte pumping are integrated, redundant electrolyte can be pumped away while the battery cell is cut, electrolyte is prevented from overflowing and adhering to the surface of the battery cell during process switching, and the processing efficiency and the processing quality are improved.

Drawings

Fig. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a schematic structural view of a cold and hot press forming device.

Fig. 3 is a schematic view of a cold press mold structure.

Fig. 4 is a schematic diagram of the pallet structure.

Fig. 5 is a schematic structural view of a die-cutting liquid extracting device.

Fig. 6 is a schematic diagram of a cell positioning disk structure.

Fig. 7 is a schematic view of a die cutting base structure.

Description of the embodiments

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the embodiments of the present utility model, it should be noted that, if the terms "upper," "lower," "inner," "outer," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like in the description of the present utility model, if any, are used for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance.

In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in the drawings, the present utility model includes a cold and hot press molding apparatus 100 and a die cutting liquid drawing apparatus 110,

the battery core is sequentially subjected to cold pressing and hot pressing in the cold and hot pressing forming device 100, then is placed in the die cutting and liquid extracting device 110 to cut the air bag, and meanwhile, the flowing electrolyte is extracted during cutting.

The cold and hot press forming device 100 specifically works on the principle that the cold and hot press forming device comprises a forming machine frame 1, a rotating disc 2, a cold press die 3 and a hot press die 4, wherein the rotating disc 2, the cold press die 3 and the hot press die 4 are arranged in a circular array manner, and three supporting plates 5 matched with the cold press die 3 and the hot press die 4 are arranged on the rotating disc 2; the rotating disc 2 rotates at an angle of 120 degrees each time, two supporting plates 5 are respectively positioned in the corresponding cold pressing die 3 and the corresponding hot pressing die 4 during pause, the battery cells are sequentially subjected to cold pressing and hot pressing in the cold pressing die 3 and the hot pressing die 4, and the other supporting plate 5 is used for placing the battery cells to be processed.

The cold pressing die 3 and the hot pressing die 4 have the same structure and both comprise an upper die plate 10 and a lower die plate 11, wherein the upper die plate 10 is movably arranged at the inner top of the forming frame 1 through an upper die plate driving oil cylinder 12, the lower die plate 11 is arranged at the inner bottom of the forming frame 1 through a lower die seat 13, a heat preservation cover 15 is arranged on the upper die plate 10, and a supporting plate avoiding gap is arranged between the upper die plate 10 and the lower die plate 11; the supporting plate 5 enters between the upper die plate 10 and the lower die plate 11 from the gap, and the upper die plate driving oil cylinder 12 is used for driving the upper die plate 10 to lift so as to mould the electric core on the supporting plate 5.

The support plate 5 is provided with a lower heat exchange channel 6, the upper template 10 is provided with an upper heat exchange channel 7, the upper heat exchange channel 7 is communicated with external heat exchange media through a pipeline, and the forming machine frames 1 corresponding to the cold pressing mold 3 and the hot pressing mold 4 are respectively provided with heat exchange media connectors 8 matched with the lower heat exchange channel 6; when the support plate 5 enters the corresponding cold pressing die 3 or hot pressing die 4, the heat exchange medium connector 8 is inserted into the support plate 5 and communicated with the lower heat exchange channel 6, heat exchange is carried out on the support plate 5 through heat exchange medium output, and after the die pressing is finished, the heat exchange medium connector 8 is pulled out, so that the support plate 5 can conveniently move to the next station. The heat exchange medium in the scheme is cold air and hot air, so that the heat exchange medium in the lower heat exchange channel 6 does not flow out to pollute the working environment after the heat exchange medium connector 8 is pulled out.

The rotating disc 2 is an electric rotating disc and is driven by a servo motor, each station of the rotating disc is 120 degrees, and a heat insulation plate 18 is arranged at the top of the forming frame 1 positioned between the cold pressing die 3 and the hot pressing die 4; the heat insulating plate 18 can reduce the heat transfer between the cold pressing die 3 and the hot pressing die 4 and avoid mutual interference. The lower die holder 13 is provided with a lower die plate driving cylinder 28 for driving the lower die plate 11 to move up and down. The clearance that is used for layer board 5 to get into is equipped with between cope match-plate pattern 10 and the lower bolster 11, lead to layer board 5 to get into its bottom and lower bolster 11 not laminate completely after, and cope match-plate pattern 10 can bear more decurrent pressure at first when pushing down, leads to layer board 5 to warp easily, and layer board 5 after the deformation produces the noise easily when linking with lower bolster 11, can cause wearing and tearing simultaneously, and the present lower bolster 11 passes through lower bolster driving cylinder 28 control its lift, and lower bolster 11 and cope match-plate pattern 10 cooperate and exert pressure simultaneously to layer board 5 for layer board 5 atress is balanced, prevents to warp.

The lower heat exchange channel 6 and the upper heat exchange channel 7 are both S-shaped, so that heat exchange media can be quickly exchanged between the supporting plate 5 and the upper template 10, the left side and the right side of the supporting plate 5 are provided with baffle plates 20, the baffle plates 20 on the two sides are provided with heat exchange ports communicated with the two ends of the lower heat exchange channel 6, and the heat exchange media connector 8 is communicated with the heat exchange ports for heat exchange media transportation; the baffle 20 can effectively prevent the supporting plate 5 from throwing out the battery cells when rotating along with the rotating disc 2. The heat exchange medium joint 8 is movably arranged on the forming frame 1 through a linear sliding table 21. The linear sliding table 21 is an electric sliding table or a starting sliding table and is used for controlling the connection or disconnection of the heat exchange medium joint 8 and the lower heat exchange channel 6.

The top of the molding frame 1 corresponding to the cold pressing mold 3 and the hot pressing mold 4 is respectively provided with a group of guide rods 27, the upper template 10 is provided with a group of guide sleeves matched with the guide rods 27, and the upper template 10 is movably connected with the molding frame 1 through the matching of the guide rods 27 and the guide sleeves.

The working principle of the die-cutting liquid extracting device 110 comprises a rotary table 30, a die-cutting rack 31 and a cutting die, wherein the rotary table 30 is an electric rotary table, a pair of cell positioning plates 35 are symmetrically arranged on a movable plate of the rotary table 30 through driving of a servo motor, the rotary table 30 rotates in a reciprocating manner, and each rotation angle is 180 degrees and is used for rotating the cell positioning plates 35 to the position right below the cutting die.

The cell positioning plate 35 is respectively provided with a cutting plate 36 and a liquid collecting disc 37, the cutting plate 36 is provided with an adjustable positioning plate 38, when the cell positioning plate is used, a cell to be cut is placed on the cutting plate 36, one end of the cell is tightly attached to the adjustable positioning plate 38 for positioning, the adjustable positioning plate 38 can be adjusted according to the size of the cell, after the cell positioning plate is adjusted, when the cell is placed on the cutting plate 36, the position to be cut is just located at the joint of the cutting plate 36 and the liquid collecting disc 37, and after the cutting die moves downwards to cut the redundant part of the cell, electrolyte can smoothly flow into the liquid collecting disc 37.

The movable disk bottom of the rotary table 30 is provided with a pair of air suction pumps 39 opposite to the liquid collecting disk 37, the liquid collecting disk 37 is provided with liquid discharge holes communicated with the air suction pumps 39, and when cutting is carried out, the air suction pumps 39 are started to enable negative pressure to be formed in the cell positioning disk 35, and electrolyte in a cell cutting part is discharged along with the negative pressure. The pump 39 is a WKA series pump that can pump both air and liquid.

The cutting die is mounted on the die-cutting frame 31 and above the rotary table 30; the cutting die comprises a sealing plate 40 matched with the battery cell positioning disc 35 and a die cutting seat 41 matched with the cutting plate 36, the sealing plate 40 is movably arranged on the die cutting frame 31 through a pair of lifting air cylinders 42, die cutting seat avoiding holes are formed in the sealing plate 40, a punch 43 is arranged at the bottom of the die cutting seat 41, and the die cutting seat 41 is movably arranged on the sealing plate 40 through a pair of die cutting air cylinders 45; the sealing plate 40 is used for forming a sealing cavity in cooperation with the battery cell positioning disc 35, a circle of sealing strip is arranged in the die cutting seat avoiding hole and used for sealing between the sealing plate 40 and the die cutting seat 41, air suction in the sealing cavity is facilitated, and when the punch 43 moves downwards, the sealing plate is matched with the end part of the cutting plate 36 to cut the battery cell. In actual installation, the sealing plate 40 is connected with the die-cutting frame 31 and the die-cutting seat 41 is connected with the sealing plate 40 through a group of guide rod and guide sleeve assemblies, so that the lifting is stable.

The height of the cutting plate 36 is higher than that of the drip pan 37, the cutting plate 36 is tightly attached to the drip pan 37, and electrolyte can be guaranteed to completely enter the drip pan 37 during cutting. A set of tooth-shaped clamping grooves 48 are respectively arranged on two sides of the cutting plate 36, and plug-in blocks 49 matched with the tooth-shaped clamping grooves 48 are respectively arranged on two ends of the adjustable positioning plate 38. The spacing between a set of tooth-like slots 48 is designed according to the cell size commonly used in the market, and each tooth-like slot 48 corresponds to a cell size, so that the position of the adjustable positioning plate 38 can be quickly adjusted when different types of cells are cut.

The die cutting seat 41 is provided with a pre-pressing plate 52, the bottom of the die cutting seat 41 is provided with a pre-pressing plate mounting groove, and the pre-pressing plate 52 is movably mounted in the groove through a group of guide rods; the bottom of the sealing plate 40 is provided with a circle of sealing strips matched with the edge opening of the battery cell positioning disc 35. The two guide rods are respectively positioned in the middle parts of the two ends of the pre-pressing plate 52, one end of the top of the guide rod is connected to the die cutting seat 41 through threads, a limiting boss is arranged at one end of the bottom of the guide rod, one end of the bottom of the guide rod does not exceed the bottom surface of the die cutting seat 41, and the pre-pressing plate 52 is provided with a step hole matched with the guide rod. Under the default condition, the pre-pressing plate 52 is hung below the die-cutting seat 41 due to dead weight, when the die-cutting seat 41 moves downwards, the pre-pressing plate 52 contacts the battery core firstly, the battery core is pressed by the dead weight, the position of the battery core is fixed, then when the die-cutting seat 41 continues to move downwards, the pre-pressing plate 52 is blocked and can retract into the die-cutting seat 41 until the punch 43 cuts the battery core, then the die-cutting seat 41 moves upwards in a resetting way, and the pre-pressing plate 52 always presses the battery core until the die-cutting seat 41 continues to move upwards to bring the pre-pressing plate 52 upwards and separate from the battery core.

The stationary plate of the rotary table 30 is provided with a liquid collecting tank 50 communicating with the liquid discharge port of the air pump 39. After the air pump 39 is started, the pumped electrolyte enters the liquid collecting tank 50 for collection, and the liquid outlet of the air pump 39 is connected with the liquid collecting tank 50 through a telescopic pipe or a hose, so that the air pump 39 cannot be influenced to rotate along with the rotary table 30.

The front sides of the molding frame 1 and the die-cutting frame 31 are provided with a communicated object placing table 22; the battery cells formed by cold and hot pressing are stacked on the object placing table 22, then sequentially placed in the battery cell positioning disc 35 for cutting, and then sequentially placed on the object placing table 22 backwards after cutting is completed, so that workers can conveniently stack the battery cells.

Claims

1. A soft package cell core compression molding and cutting system is characterized by comprising a cold and hot compression molding device (100) and a die cutting and liquid pumping device (110),

the cold and hot press forming device (100) comprises a forming machine frame (1), and a rotating disc (2), a cold press die (3) and a hot press die (4) which are arranged in the forming machine frame (1), wherein three supporting plates (5) matched with the cold press die (3) and the hot press die (4) are annularly arranged on the rotating disc (2);

the die-cutting liquid suction device (110) comprises a rotary table (30), a die-cutting frame (31) and a cutting die, a pair of electric core positioning disks (35) are symmetrically arranged on a movable disk of the rotary table (30), cutting plates (36) and liquid collecting disks (37) are respectively arranged on the electric core positioning disks (35), an adjustable positioning plate (38) is arranged on each cutting plate (36), a pair of air suction pumps (39) opposite to each liquid collecting disk (37) are arranged at the bottom of the movable disk of the rotary table (30), liquid discharge holes communicated with the air suction pumps (39) are formed in the liquid collecting disks (37), and the cutting die is arranged on the die-cutting frame (31) and located above the rotary table (30);

the front sides of the forming machine frame (1) and the die-cutting machine frame (31) are provided with a communicated object placing table (22).

2. The soft package battery cell compression molding cutting system according to claim 1, wherein the cold pressing mold (3) and the hot pressing mold (4) comprise an upper mold plate (10) and a lower mold plate (11), the upper mold plate (10) is movably arranged at the inner top of the molding frame (1) through an upper mold plate driving oil cylinder (12), the lower mold plate (11) is arranged at the inner bottom of the molding frame (1) through a lower mold seat (13), a heat preservation cover (15) is arranged on the upper mold plate (10), and a supporting plate avoiding gap is arranged between the upper mold plate (10) and the lower mold plate (11); a lower heat exchange channel (6) is arranged on the supporting plate (5), an upper heat exchange channel (7) is arranged on the upper template (10), and heat exchange medium connectors (8) matched with the lower heat exchange channel (6) for use are respectively arranged on the forming machine frame (1) corresponding to the cold pressing die (3) and the hot pressing die (4);

the rotating disc (2) is an electric rotating disc, and a heat insulation plate (18) is arranged at the top of the forming frame (1) positioned between the cold pressing die (3) and the hot pressing die (4); the lower die holder (13) is provided with a lower die plate driving oil cylinder (28) for driving the lower die plate (11) to move up and down.

3. The soft package battery cell compression molding cutting system according to claim 2, wherein the lower heat exchange channel (6) and the upper heat exchange channel (7) are both S-shaped, the left side and the right side of the supporting plate (5) are provided with baffle plates (20), the baffle plates (20) on the two sides are provided with heat exchange ports communicated with the two ends of the lower heat exchange channel (6), and the heat exchange medium joint (8) is communicated with the heat exchange ports for heat exchange medium transportation; the heat exchange medium joint (8) is movably arranged on the forming frame (1) through a linear sliding table (21).

4. The soft package battery cell compression molding cutting system according to claim 1, wherein a group of guide rods (27) are respectively arranged at the top of a molding frame (1) corresponding to the cold pressing mold (3) and the hot pressing mold (4), a group of guide sleeves matched with the guide rods (27) are arranged on an upper mold plate (10), and the upper mold plate (10) is movably connected with the molding frame (1) through the matching of the guide rods (27) and the guide sleeves.

5. The soft package battery core die-forming cutting system according to claim 1, wherein the cutting die comprises a sealing plate (40) matched with a battery core positioning disc (35) and a die cutting seat (41) matched with a cutting plate (36), the sealing plate (40) is movably arranged on a die cutting frame (31) through a pair of lifting cylinders (42), a die cutting seat avoiding hole is formed in the sealing plate (40), a punch (43) is arranged at the bottom of the die cutting seat (41), and the die cutting seat (41) is movably arranged on the sealing plate (40) through a pair of die cutting cylinders (45); the height of the cutting plate (36) is higher than that of the liquid collecting disc (37), a group of tooth-shaped clamping grooves (48) are respectively arranged on two sides of the cutting plate (36), and inserting blocks (49) matched with the tooth-shaped clamping grooves (48) are respectively arranged at two ends of the adjustable positioning plate (38).

6. The soft package cell die-forming cutting system according to claim 5, wherein the die-cutting seat (41) is provided with a pre-pressing plate (52), the bottom of the die-cutting seat (41) is provided with a pre-pressing plate mounting groove, and the pre-pressing plate (52) is movably mounted in the groove through a group of guide rods; the bottom of the sealing plate (40) is provided with a circle of sealing strips matched with the edge opening of the battery cell positioning disc (35).

7. The soft package cell die-forming cutting system according to claim 1, wherein a liquid collecting groove (50) communicated with a liquid outlet of the air pump (39) is arranged on a fixed disc of the rotary table (30).