Aluminum plastic film packaging mechanism for soft package battery cell

Abstract

The utility model discloses a soft package cell aluminum plastic film packaging mechanism which comprises a front pressing clamping jaw and a rear pressing clamping jaw, the front pressing clamping jaw comprises a first connecting block and a first pressing block, the rear pressing clamping jaw is an integral second pressing block, the first pressing block and the second pressing block are in multi-plane matching, and the matching surface is in a step shape. According to the utility model, the aluminum-plastic film can be bent at the matching part to form the reinforcing ribs, the phenomenon that the aluminum-plastic film deforms due to gravity in the process of being fed into the film cutting machine can be effectively improved due to the generation of the reinforcing ribs, and the situation that the lithium battery packaging quality is reduced due to edge curling caused by deformation in the cutting process is prevented.

Description

Technical Field

[0001] The utility model relates to an aluminum-plastic film packaging mechanism for a soft-pack battery core, belonging to the field of new energy battery equipment. Background Art

[0002] With economic development and rising living standards, lithium-ion batteries are increasingly being used in various fields. Polymer lithium-ion batteries, due to their safety and highly customizable design, are increasingly popular across various consumer sectors. With the growing market for small electronic consumer products like e-cigarettes and wireless earphones, mini polymer batteries are increasingly in short supply. At the same time, consumer demand for the safety and reliability of battery products is also increasing significantly.

[0003] During the packaging process of soft-pack lithium-ion batteries, the aluminum-plastic film can fix the internal equipment of the battery with the battery shell, which protects the internal components and prevents the leakage of metal sheets and electrolyte. It also has a certain resistance, which can limit the flow of current to a certain extent, effectively avoiding overcharging, over-discharging or short circuit. It is also flame retardant to a certain extent, which ensures the safety of the battery to a certain extent.

[0004] During the battery packaging process, the aluminum-plastic film itself often curls during cutting due to its inherent structural characteristics, resulting in a loss of packaging strength and ultimately causing serious problems such as leakage. Ensuring battery packaging strength has become a key technical issue that needs to be addressed in the battery industry. Utility Model Content

[0005] The purpose of the utility model is to provide an aluminum-plastic film packaging mechanism for a soft-pack battery core to solve the above technical problems.

[0006] The technical solution for achieving the purpose of the utility model is: a soft-pack battery cell aluminum-plastic film packaging mechanism, including a front pressure clamp and a rear pressure clamp, the front pressure clamp includes a first connecting block and a first pressure block, the rear pressure clamp is an integral second pressure block, the first pressure block and the second pressure block are matched with multiple planes, and the matching surface is stepped.

[0007] Further or optionally, the first pressure block includes a first pressure block head and a first pressure block tooth, and the second pressure block is an integrated structure, specifically including a second pressure block head that cooperates with the first pressure block head plane and a second pressure block tooth that cooperates with the first pressure block tooth step, the first pressure block head and the second pressure block head are the first contact surface, the first pressure block tooth and the second pressure block tooth are the second contact surface, there is a height difference between the first contact surface and the second contact surface, and the mating surface has a Z-shaped cross-section.

[0008] In the structure of the present invention, the first pressing block head and the second pressing block head of the front pressing jaw and the rear pressing jaw fit together, the first pressing block teeth and the second pressing block teeth cooperate with each other, and the aluminum-plastic film is bent at the place where the first pressing block teeth and the second pressing block teeth cooperate to form reinforcing ribs. The formation of the reinforcing ribs can effectively improve the phenomenon of the aluminum-plastic film being deformed due to gravity during the process of being fed into the film cutting machine, and prevent the deformation during the cutting process from causing curling, which causes the quality of the lithium battery packaging to decline.

[0009] Further or optionally, in order to flexibly adjust the number of reinforcing ribs to meet the overall strength requirement of the aluminum-plastic film, there are multiple first pressing block teeth and multiple second pressing block teeth, which cooperate with each other.

[0010] Further or optionally, in order to meet the diverse needs in the battery packaging process and facilitate matching of appropriate packaging heads according to actual requirements, the first connecting block and the first pressing block are designed to be split, with screw holes passing through the connection point, and the two are connected by bolts.

[0011] Further or optionally, in order to simplify the equipment structure and reduce the device preparation cost, the second connecting block and the second pressing block are an integrated structure.

[0012] Further or optionally, in order to meet the diverse requirements of the thickness of the aluminum-plastic film, the first connecting block cooperates with the second connecting block, and through bolt holes are provided at corresponding positions thereof, and the distance between the two is adjusted by a screw.

[0013] As a first step or optionally, the present invention also provides another driving method to improve its control accuracy, wherein the second connecting block is fixedly arranged, and the first connecting block is movably arranged and detachably connected to the driving device.

[0014] By adopting the above technical solution, the utility model has the following beneficial effects:

[0015] (1) The first pressing block head and the second pressing block head of the front pressing jaw and the rear pressing jaw of the utility model fit together, and the first pressing block teeth and the second pressing block teeth cooperate with each other. A stepped mating surface is used between the two. After packaging, reinforcing ribs are formed at the stepped surface formed by the cooperation, which can effectively prevent curling in the subsequent cutting process, effectively ensure the edge sealing quality of the battery, and improve the safety performance of the battery. When this structure is applied to the existing structure, the modification cost is low and does not affect the existing production process.

[0016] (2) There is a height difference between the contact surfaces of the first pressing block head and the second pressing block head, and the first pressing block teeth and the second pressing block teeth of the utility model, which can effectively form a clear partition between the two contact areas, and can be cut directly at the partition, which is conducive to improving production efficiency.

[0017] (3) The first pressing block teeth and the second pressing block teeth of the present invention are multiple and cooperate with each other, and the number of reinforcing ribs can be flexibly adjusted to meet the diverse strength requirements of the aluminum-plastic film.

[0018] (4) The first connecting block and the first pressing block of the present invention are of split design. Corresponding through screw holes are respectively provided between the first connecting block and the first pressing block. The two are connected by bolts, and the appropriate front pressing claw and rear pressing claw can be easily replaced, and the usage occasions are more flexible.

[0019] (5) The distance between the second connecting block and the second pressing block of the utility model can be adjusted by a screw, which can effectively adjust the sealing thickness to meet the diverse requirements of the aluminum-plastic film thickness.

[0020] (6) The rear pressure clamping jaw of the present invention is fixed, and the front pressure clamping jaw is detachably connected to the driving device, which makes it easy to replace parts and meet various production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the present invention easier to understand, the present invention is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein

[0022] Figure 1 It is a structural diagram of the present utility model.

[0023] Figure 2 This is a schematic diagram of the rear pressure clamping jaw structure of the present utility model.

[0024] The numbers in the accompanying drawings are: front pressing jaw 1, first connecting block 11, first pressing block 12, first pressing block head 121, first pressing block teeth 122, rear pressing jaw 2, second pressing block 21, second pressing block head 211, second pressing block teeth 212. DETAILED DESCRIPTION

[0025] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0029] In the description of the embodiments of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "setting", "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The present invention is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the scope of protection of the present invention.

[0031] (Example 1)

[0032] See Figure 1 This embodiment includes a front pressure clamping jaw 1 and a rear pressure clamping jaw 2. The front pressure clamping jaw 1 includes a first connecting block 11 and a first pressure block 12. The rear pressure clamping jaw 2 is an integral second pressure block 21. There are multiple stepped mating surfaces between the first pressure block 12 and the second pressure block 21.

[0033] The first pressure block 12 includes a first pressure block head 121 and a first pressure block tooth 122. The second pressure block 21 is an integrated structure, specifically including a second pressure block head 211 that cooperates with the first pressure block head 121 in a plane and a second pressure block tooth 212 that cooperates with the first pressure block tooth 122 in a step-by-step manner. The first pressure block head 121 and the second pressure block head 211 are the first contact surface, and the first pressure block tooth 122 and the second pressure block tooth 212 are the second contact surface. There is a height difference between the first contact surface and the second contact surface.

[0034] The first pressing block teeth 122 and the second pressing block teeth 212 are respectively a plurality of teeth that cooperate with each other.

[0035] The first connecting block 11 and the first pressing block 12 are of split design, and corresponding through screw holes are provided at the connection point, and the two are connected by bolts.

[0036] The first connecting block 11 cooperates with the second connecting block 21 , and through bolt holes are provided at corresponding positions thereof, and the distance between the two is adjusted by a screw rod.

[0037] In order to adapt to existing equipment, the rear pressure clamping jaw 2 is fixedly arranged, and the front pressure clamping jaw 1 is detachably connected to the driving device.

[0038] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A soft-pack battery core aluminum-plastic film packaging mechanism, characterized by: The invention comprises a front pressure clamping jaw (1) and a rear pressure clamping jaw (2), wherein the front pressure clamping jaw (1) comprises a first connecting block (11) and a first pressure block (12), and the rear pressure clamping jaw (2) is an integral second pressure block (21), and a plurality of stepped mating surfaces are provided between the first pressure block (12) and the second pressure block (21).

2. The aluminum-plastic film packaging structure for a soft-pack battery cell according to claim 1, characterized in that: The first pressure block (12) includes a first pressure block head (121) and a first pressure block tooth (122); the second pressure block (21) is an integrated structure, specifically including a second pressure block head (211) that matches the first pressure block head (121) in a plane and a second pressure block tooth (212) that matches the first pressure block tooth (122) in a step-wise manner; a first contact surface is formed between the first pressure block head (121) and the second pressure block head (211); a second contact surface is formed between the first pressure block tooth (122) and the second pressure block tooth (212); and a height difference exists between the first contact surface and the second contact surface.

3. The aluminum-plastic film packaging structure for a soft-pack battery cell according to claim 1, characterized in that: There are a plurality of the first pressing block teeth (122) and a plurality of the second pressing block teeth (212).

4. The aluminum-plastic film packaging structure for a soft-pack battery cell according to claim 1, characterized in that: The first connecting block (11) and the first pressing block (12) are of split design, and corresponding through screw holes are provided at their connection points, and the two are connected by bolts.

5. The aluminum-plastic film packaging structure for a soft-pack battery cell according to claim 4, characterized in that: The distance between the first connecting block (11) and the second connecting block (21) is adjusted by a screw.

6. The aluminum-plastic film packaging structure for a soft-pack battery cell according to claim 4, characterized in that: The rear pressure clamping jaw (2) is fixedly arranged, and the front pressure clamping jaw (1) is detachably connected to the driving device.

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