Packaging device capable of adapting to different sizes of soft package battery tabs

Abstract

The utility model discloses a packaging device adaptable to different sizes of soft package battery tabs, and relates to the technical field of battery production, the packaging device comprises an upper die and a lower die adapted to the upper die, the close sides of the upper die and the lower die are respectively provided with an upper sealing part and a lower sealing part, and when the upper die and the lower die are in a closed mode, the upper sealing part and the lower sealing part are sealed by the upper sealing part and the lower sealing part. The upper sealing part and the lower sealing part are used for clamping the edge of an aluminum plastic film in the soft package battery; the upper sealing part and the lower sealing part are each provided with two sets of grooves, and the two sets of grooves in the upper sealing part and the two sets of grooves in the lower sealing part are arranged in a one-to-one correspondence mode, so that when the upper mold and the lower mold are in a closed mode, the grooves in the upper sealing part and the grooves in the lower sealing part jointly define a containing cavity used for containing electrode tabs. The adjustable movable blocks are arranged at the sealing parts of the upper die and the lower die, and the size of the accommodating cavity can be flexibly adjusted, so that the device is adaptive to electrode tabs with different sizes and thicknesses, and the universality and the production efficiency of the device are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery production technical field, concretely relates to a kind of packaging device of different soft package battery tab size can be adapted. BACKGROUND

[0002] Aqueous zinc-ion battery is a kind of rechargeable battery using water as electrolyte and zinc as negative electrode. Its working principle is based on the migration and electrochemical reaction of zinc ions between positive and negative electrodes. Aqueous zinc-ion battery can be composed of soft package battery, which is a battery design using flexible packaging material (such as aluminum plastic film). It has two electrode tabs on one side, with the characteristics of light weight, flexible shape, high safety, etc.

[0003] The commonly used packaging device at present, for example, the patent document with the authorization announcement number CN220233264U discloses a soft package battery packaging mold, which includes an upper mold body and a lower mold body. The soft package battery includes a battery core and an aluminum plastic film wrapped outside the battery core, and also includes a tab. The upper mold body has an upper sealing portion, and the lower mold body has a lower sealing portion. The upper sealing portion and the lower sealing portion are used to clamp the edge of the aluminum plastic film in the soft package battery when the mold is closed. The lower end of the upper sealing portion is provided with two upper tab slots, and the upper end of the lower sealing portion is provided with lower tab slots corresponding to the upper tab slots and aligned with the corresponding upper tab slots. When the mold is closed, the upper tab slots cooperate with the corresponding lower tab slots to form a containing cavity for containing the corresponding tab in the soft package battery. The lower end of the upper sealing portion is provided with an upper curved pressing portion between the two upper tab slots, and the upper end of the lower sealing portion is provided with a lower curved pressing portion between the two lower tab slots and matched with the upper curved pressing portion. The upper curved pressing portion and the lower curved pressing portion are used to clamp the edge of the aluminum plastic film between the two tabs in the soft package battery when the mold is closed, and to stretch the clamped edge of the aluminum plastic film along the curved shape.

[0004] The packaging mold is provided with tab slots on the upper mold body and the lower mold body. When the mold is closed, the tab slots form a containing cavity for containing the tab. According to the technical scheme description and the drawings, the two tab slots are pre-set, and the depth of the tab slot is constant. However, in the same type of soft package battery, the thickness of the electrode tab will also be different due to the influence of factors such as current carrying capacity, battery capacity, electrical conductivity and welding process, and thus when the same type of soft package battery with different thickness tabs needs to be packaged, the general solution is to adapt to set multiple packaging devices for use. This solution not only makes the enterprise's initial cost investment higher, increasing the burden of the enterprise, but also requires maintenance of multiple packaging devices in the later period.

[0005] To this end, we propose a packaging device that can adapt to different soft pack battery tab size to solve the above problems. Utility model content

[0006] The utility model discloses a packaging device that can adapt to different soft pack battery tab size to solve the problems in the prior art.

[0007] To solve the above problems, the utility model provides the following technical scheme:

[0008] A packaging device that can adapt to different soft pack battery tab size, including upper die and with upper die's lower die, the proximal side of upper die and lower die is provided with upper seal part and lower seal part respectively, to when upper die and lower die are in the closed die mode, upper seal part and lower seal part are used for clamping the edge of the aluminum plastic film in soft pack battery, the upper seal part and lower seal part are all seted up two groups of recesses, and the two groups of recesses on upper seal part and the two groups of recesses on lower seal part are set up one to one, to when upper die and lower die are in the closed die mode, the recess on upper seal part and the recess on lower seal part are jointly enclosed into the accommodating cavity for accommodating electrode tab, the recess is slidably provided with movable block that can move towards the slot, to make the size of the accommodating cavity formed by the corresponding two groups of recesses in the closed die mode adjustable.

[0009] As a further scheme of the utility model: the recess is provided with a driving member for driving the movable block to slide.

[0010] As a further scheme of the utility model: the driving member includes an assembly strip fixedly arranged in the recess, a bolt is threadedly mounted on the assembly strip, and the length direction of the bolt is parallel to the groove depth direction of the recess, and the movable block is rotatably connected with the end portion of the bolt, so that when the bolt rotates, the movable block is driven to slide in the recess.

[0011] As a further scheme of the utility model: the upper die and / or the lower die are provided with a scale mark at the position close to the recess, and the scale mark is arranged along the groove depth direction of the recess.

[0012] As a further scheme of the utility model: the end portion of the movable block is in a dynamic sealing connection relationship with the inner wall of the recess.

[0013] As a further scheme of the utility model: the position between the two recesses of the upper seal part is provided as an upper curved surface pressing portion, the position between the two recesses of the lower seal part is provided as a lower curved surface pressing portion, and the curved surface structures on the lower curved surface pressing portion and the upper curved surface pressing portion are in an adaptive relationship.

[0014] As a further scheme of the utility model: the packaging device further includes a case and a case cover arranged on the case, the upper die and the lower die are arranged on the case cover and the case respectively, so that the upper die and the lower die are in a closed mode when the case cover is closed on the case.

[0015] As a further scheme of the utility model: the upper die and the lower die are provided with heating elements.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The device can flexibly adjust the size of the accommodating cavity by arranging adjustable movable blocks on the sealing portions of the upper die and the lower die, thereby adapting to electrodes with different sizes and thicknesses, and significantly improving the versatility and production efficiency of the device.

[0018] 2. The driving elements arranged in the grooves can accurately control the sliding of the movable blocks, ensure that the size adjustment of the accommodating cavity is more convenient and accurate, and meet the packaging needs of soft package batteries of different specifications.

[0019] 3. The rotating connection design of the bolt and the movable block can realize the accurate sliding of the movable block by rotating the bolt, and the adjustment process is stable and simple to operate, thereby further improving the practicability and adjustment accuracy of the device.

[0020] 4. The scale marks are arranged on the positions of the upper die and / or the lower die close to the grooves, which can directly display the position of the movable block, facilitate the operator to quickly and accurately adjust, and improve the work efficiency.

[0021] 5. Dynamic sealing connection relationship: the end of the movable block and the inner wall of the groove are connected by dynamic sealing, which can ensure that the movable block will not produce gaps during sliding, avoid impurities from entering, and improve the sealing performance and durability of the device.

[0022] 6. By arranging the upper die and the lower die on the case and the case cover respectively, the structure design of the device is simplified, the operation and maintenance are facilitated, and the overall stability and use convenience of the equipment are improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model will be further described in connection with the drawings.

[0024] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0025] Figure 2 It is a three-dimensional structure schematic view of the upper die and the lower die in the utility model when the mold is opened;

[0026] Figure 3 It is Figure 2 an enlarged structure schematic view of A in the utility model;

[0027] Figure 4 is the three-dimensional structure schematic diagram of the upper die and the lower die of the utility model in the combined die;

[0028] Figure 5 is Figure 4 the enlarged structure schematic diagram of B in the utility model;

[0029] Figure 6 is the three-dimensional structure schematic diagram of the clamp of the utility model;

[0030] Figure 7 is the sectional structure schematic diagram of the lock piece of the utility model.

[0031] In the drawing: 1, upper die; 101, upper sealing portion; 102, upper curved surface pressing portion; 2, lower die; 201, lower sealing portion; 202, lower curved surface pressing portion; 3, groove; 4, accommodating cavity; 5, movable block; 6, assembly strip; 7, bolt; 8, scale mark; 9, case; 10, case cover; 11, clamp; 111, bearing plate; 112, sliding groove; 113, limiting column; 12, follow-up block; 13, push block; 14, inclined surface; 15, screw rod; 16, through hole; 17, accommodating groove. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0033] As Figures 1-7 shown, a packaging device comprises a case 9 for bearing driving devices and control devices, the case 9 is hingedly provided with a case cover 10 which can be in a cover fitting relationship with the top of the case 9, the top of the case 9 is provided with a clamp 11 for limiting an aluminum plastic film and a packaging assembly for packaging the aluminum plastic film, in use, the aluminum plastic film on a soft package battery to be packaged is first limited and fixed by the clamp 11, and then the fixed aluminum plastic film is packaged by the packaging assembly.

[0034] As follows, the clamp 11 and the packaging assembly are introduced in detail respectively:

[0035] Clamp:

[0036] (1) as Figure 6As shown, the clamp 11 comprises a bearing plate 111, a sliding groove 112 is formed on the bearing plate 111, two limiting columns 113 are slidingly installed on the sliding groove 112, the two limiting columns 113 can act close to or away from each other, at the same time, the limiting column 113 is provided with a locking piece for locking its position, so that after the two limiting columns 113 move to the specified position, the position of the two limiting columns 113 can be locked by using the locking piece. During the limiting process of the aluminum plastic film, the aluminum plastic film is first placed on the bearing plate 111 and located between the two limiting columns 113, and then the two limiting columns 113 are driven to move towards the aluminum plastic film, until the limiting column 113 abuts against the aluminum plastic film, and the limiting column 113 is locked by using the locking piece, that is, the point contact limiting of the two limiting columns 113 to the aluminum plastic film is realized. On the basis that the sliding groove 112 and the two limiting columns 113 jointly constitute a clamping piece, the clamping piece is further provided as a plurality of groups in the present application, so as to realize the multi-point limiting of the aluminum plastic film, such as Figure 6 As shown, this is the case of setting three groups of sliding grooves 112. Compared with the limiting effect of the line contact limiting and the surface contact limiting in the prior art which is affected by the shape of the soft package battery, the contact area between the point contact limiting in the present application and the soft package battery is smaller, which can not only adapt to the limiting of plastic films with different shapes, but also can be stably limited in all directions due to the setting of multiple groups, and the limiting effect is good.

[0037] (2) As shown in Figure 6 In the case of simply setting the sliding groove 112, the two limiting columns 113 are stored in the sliding groove 112. In order that the aluminum plastic film covered by the sliding groove 112 is not interfered by the limiting column 113 during the process of being placed on the bearing plate 111, the bearing plate 111 is provided with a containing groove 17 at the position of both ends of the sliding groove 112, and the containing groove 17 is in communication with the sliding groove 112. Further, in the initial state, the limiting column 113 is slid into the containing groove 17, and subsequently there is no limiting column 113 on the sliding groove 112, so that the aluminum plastic film can be directly placed on the corresponding position of the bearing plate 111, and then the limiting column 113 is slid onto the sliding groove 112 and abuts against the aluminum plastic film, and then the locking piece is used for locking.

[0038] (3) For the design of the locking piece in the clamp 11, the locking piece can be provided as a locking component in the prior art, such as screw fixing, positioning pin fixing, hydraulic lock fixing, pneumatic lock fixing, etc. In combination with the actual application scene, the locking piece is designed as follows: the locking piece comprises a through hole 16 provided at the center position of the limiting column 113. Under normal circumstances, the limiting column 113 is arranged in a vertical direction, and thus the through hole 16 is also arranged in a vertical direction. A follower block 12 is slidably installed in the through hole 16 in a vertical direction, and two push blocks 13 are slidably installed in the through hole 16 in a horizontal direction. The follower block 12 is located above the two push blocks 13. One end of the push block 13 can extend out of the through hole 16 and abut against the inner wall of the sliding groove 112. One end of the push block 13 located in the through hole 16 is provided with an inclined surface 14 for abutting against the follower block 12. The inclined surfaces 14 on the two push blocks 13 are arranged in an inverted V shape. Figure 7 As shown in

[0039] (4) For the sliding design of the follower block 12 in the through hole 16 in the above (3), the through hole 16 can be provided as a threaded hole, and a screw rod 15 is installed on the threaded hole. The top end of the follower block 12 is rotatably connected to the bottom end of the screw rod 15. When the screw rod 15 rotates, the follower block 12 can be driven to move upward or downward in the through hole 16. By relying on the self-locking characteristic of the screw rod 15, the follower block 12 can be temporarily stopped at any position in the through hole 16.

[0040] Packaging assembly:

[0041] (1) As shown in Figure 1 , the packaging assembly comprises a lower die 2 arranged at the top of the case 9 and an upper die 1 arranged on the case cover 10. When the case cover 10 is covered on the top of the case 9, the upper die 1 and the lower die 2 will be in a closed mode. In use, when the case cover 10 is in an open state, the aluminum plastic film can be first positioned by the clamp 11 and the edge of the aluminum plastic film is placed on the lower die 2, and then the case cover 10 is closed to realize the pressing of the edge of the aluminum plastic film by the upper die 1 and the lower die 2, so that the packaging work can be carried out.

[0042] (2) As shown in Figure 2 and Figure 4As shown, specifically, the upper die 1 and the lower die 2 are respectively provided with an upper sealing portion 101 and a lower sealing portion 201 on the side close to each other, so that the upper sealing portion 101 and the lower sealing portion 201 are used to clamp the edge of the aluminum plastic film in the soft package battery when the upper die 1 and the lower die 2 are in a closed mold state; the upper die 1 and the lower die 2 are both provided with a heating element (not shown in the figure), and the two heating elements are respectively used to provide high heat to the upper die 1 and the lower die 2, so that the temperature at the upper sealing portion 101 and the lower sealing portion 201 can be used for packaging work. It should be noted that the heating element is a conventional technical means in the prior art, for example, a heating plate, a resistance wire, etc., and the installation mode includes but is not limited to clamping, buckling, threaded connection, mortise and tenon fitting, and integral forming with the mold body.

[0043] (3) As shown in Figure 3 and Figure 5 , two groups of grooves 3 are formed on the upper sealing portion 101 and the lower sealing portion 201, and the two groups of grooves 3 on the upper sealing portion 101 and the lower sealing portion 201 are correspondingly arranged, so that when the upper die 1 and the lower die 2 are in a closed mold state, the grooves 3 on the upper sealing portion 101 and the lower sealing portion 201 jointly enclose a containing cavity 4 for accommodating the electrode tab. A movable block 5 which can move towards the slot is slidably arranged in the groove 3, and the end of the movable block 5 is in a dynamic sealing connection relationship with the inner wall of the groove 3. The existence of the movable block 5 can be regarded as the "bottom" of the groove 3, and the distance between the "bottom" and the slot can be adjusted, thereby realizing the size adjustment of the groove 3, so that the size of the containing cavity 4 formed by the corresponding two groups of grooves 3 in the closed mold state can be adjusted. When dealing with soft package batteries of the same type but different thickness electrode tabs, the position of the movable block 5 in the groove 3 can be adjusted according to the thickness of the tab, until the size of the containing cavity 4 formed by the corresponding two groups of grooves 3 in the closed mold state is adapted to the thickness of the electrode tab, that is, the containing cavity 4 can accommodate the electrode tab. Compared with the constant size of the containing cavity 4 in the prior art, the size of the containing cavity 4 in the present application can be adjusted, which can accommodate electrode tabs of corresponding thickness and has a wide range of applications.

[0044] (4) As shown in Figure 3 , specifically, for the activity adjustment of the movable block 5 in the groove 3, a driving element for driving the movable block 5 to slide is arranged in the groove 3. The driving element can be a conventional design in the prior art, such as a cam structure, a screw rod and block structure, etc. This paper takes the screw rod and block structure as an example for description. The driving element includes an assembly strip 6 fixedly arranged in the groove 3, a bolt 7 is threadedly mounted on the assembly strip 6, and the length direction of the bolt 7 is parallel to the groove depth direction of the groove 3. The movable block 5 is rotatably connected with the end of the bolt 7, so that when the bolt 7 rotates, the movable block 5 is driven to slide in the groove 3.

[0045] (5) As shown in Figure 3As shown, in order to the distance that the movable block 5 can be adjusted can be seen, the application is provided with scale marks 8 at the position of the upper die 1 and / or the lower die 2 close to the groove 3, and the scale marks 8 are arranged along the groove depth direction of the groove 3, in the adjusting process, the staff can know the distance between the movable block 5 and the groove 3 by the scale marks 8, and then the movable block 5 can be quickly and accurately adjusted to the specified position.

[0046] (6) as shown in Figure 2 and Figure 4 As shown, in order to the part of the aluminum plastic film between the two grooves 3 does not appear wrinkle in the packaging process, the application is provided with the upper curved pressing part 102 at the position of the upper sealing part 101 between the two grooves 3, and the lower curved pressing part 202 at the position of the lower sealing part 201 between the two grooves 3, and the curved surface structure on the lower curved pressing part 202 and the upper curved pressing part 102 is in adaptive relationship. In the subsequent packaging process, the part of the aluminum plastic film between the two grooves 3 is placed between the upper curved pressing part 102 and the lower curved pressing part 202, and under the existence of the upper and lower curved surfaces, the part of the aluminum plastic film between the two grooves 3 can be stretched and expanded, and good hot-pressing sealing can be realized.

[0047] The above has carried out the detailed explanation to one embodiment of the utility model, but the content described can only be the preferred embodiment of the utility model, and cannot be considered for limiting the implementation scope of the utility model. All equivalent changes and improvements made in the utility model application range should still belong to the patent coverage range of the utility model.

Claims

1. A packaging device suitable for different soft package battery tab sizes, comprising an upper mold (1) and a lower mold (2) matched with the upper mold (1), the proximal sides of the upper mold (1) and the lower mold (2) are respectively provided with an upper sealing part (101) and a lower sealing part (201), so that when the upper mold (1) and the lower mold (2) are in a closed mold state, the upper sealing part (101) and the lower sealing part (201) are used to clamp the edge of the aluminum plastic film in the soft package battery; two groups of grooves (3) are formed on the upper sealing part (101) and the lower sealing part (201), and the two groups of grooves (3) on the upper sealing part (101) are one-to-one matched with the two groups of grooves (3) on the lower sealing part (201), so that when the upper mold (1) and the lower mold (2) are in a closed mold state, the grooves (3) on the upper sealing part (101) and the grooves (3) on the lower sealing part (201) jointly enclose a containing cavity (4) for accommodating the electrode tab, characterized in that, The movable block (5) is movably arranged in the groove (3) and can move towards the groove mouth, so that the size of the accommodating cavity (4) formed by the two groups of grooves (3) in the closed mode can be adjusted.

2. The packaging device of claim 1, wherein, The groove (3) is provided with a driving member for driving the movable block (5) to slide.

3. The packaging device of claim 2, wherein, The driving member comprises a mounting strip (6) fixedly arranged in the groove (3), a bolt (7) is threadedly mounted on the mounting strip (6), the length direction of the bolt (7) is parallel to the groove depth direction of the groove (3), and the movable block (5) is rotationally connected with the end of the bolt (7), so that when the bolt (7) rotates, the movable block (5) is driven to slide in the groove (3).

4. The packaging device of any one of claims 1-3, wherein, The upper die (1) and / or the lower die (2) are provided with scale marks (8) at positions close to the groove (3), and the scale marks (8) are arranged along the groove depth direction of the groove (3).

5. The packaging device of claim 3, wherein the plurality of protrusions are arranged in a plurality of rows, and the plurality of protrusions in each row are arranged in a plurality of columns. The end of the movable block (5) is in a dynamic sealing connection relationship with the inner wall of the groove (3).

6. The packaging device of any one of claims 1-3, wherein, The upper sealing portion (101) is arranged as an upper curved surface pressing portion (102) at a position between the two grooves (3), the lower sealing portion (201) is arranged as a lower curved surface pressing portion (202) at a position between the two grooves (3), and the curved surface structures on the lower curved surface pressing portion (202) and the upper curved surface pressing portion (102) are in a matching relationship.

7. The packaging device of any one of claims 1-3, wherein, The packaging device further comprises a cabinet (9) and a cabinet cover (10) arranged on the cabinet (9), the upper die (1) and the lower die (2) are arranged on the cabinet cover (10) and the cabinet (9) respectively, so that when the cabinet cover (10) is closed on the cabinet (9), the upper die (1) and the lower die (2) are in a closed mode.

8. The packaging device of any one of claims 1-3, wherein, The upper die (1) and the lower die (2) are both provided with heating members.

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