CN218453210U

CN218453210U - Plastic-aluminum membrane levels holding device and plastic-aluminum membrane packaging hardware

Info

Publication number: CN218453210U
Application number: CN202121778459.6U
Authority: CN
Inventors: 马毅; 丁亚男; 杨树涛
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2023-02-07
Anticipated expiration: 2031-07-30

Abstract

The utility model provides an aluminium-plastic film levels holding device and aluminium-plastic film packaging hardware, the utility model discloses an aluminium-plastic film levels holding device for keep the local roughness to aluminium-plastic film heat-seal in-process, this aluminium-plastic film levels holding device mainly includes supporter and two splint. Wherein the supporting body is driven to move close to or away from the aluminum plastic film, the two clamping plates are arranged on the supporting body in a sliding manner, have oppositely arranged clamping planes and move close to or away from each other by driving. The utility model discloses an aluminium-plastic membrane levels holding device can carry out the centre gripping flattening to the local unevenness of aluminium-plastic membrane to the local roughness that keeps aluminium-plastic membrane that can be better, and have higher flattening efficiency and better result of use.

Description

Plastic-aluminum membrane levels holding device and plastic-aluminum membrane packaging hardware

Technical Field

The utility model relates to a lithium ion battery makes technical field, in particular to plastic-aluminum membrane levels retention device. The utility model discloses still relate to an use and have this plastic-aluminum membrane to level plastic-aluminum membrane packaging hardware of holding device.

Background

With the wide application of the lithium ion battery, more and more electronic devices are developing towards the wearable direction, and the lithium ion battery has the characteristics of high energy density, good cycle performance, good stability and the like, and can effectively adapt to the upgrading and updating of the electronic devices. However, the conventional products such as lithium ion batteries and supercapacitors are rigid, and when the products are bent and folded, the motor materials and the current collectors are easily separated, so that the electrochemical performance is affected, even short circuit is caused, and a serious safety problem occurs.

The soft package battery is a flexible battery of which the lithium ion battery is structurally packaged by an aluminum plastic film, and the soft package battery can blow and crack at most under the condition of potential safety hazard, so the potential safety hazard is small. In the production and manufacturing process of the soft package lithium ion battery, an important process is the shell punching and forming of the aluminum plastic film, however, when the aluminum plastic film is punched and processed into a shell, the edge of the aluminum plastic film of the outer package is easy to wrinkle and difficult to rebound, the efficiency of punching the shell is low, and the battery production in factory and scale cannot be matched.

The packaging of the aluminum plastic film is also an important process of the soft package lithium battery, and in popular science, the packaging of the aluminum plastic film is to put a laminated or wound battery core into a punched and formed aluminum plastic film to heat and package the aluminum plastic film, and an inner layer (generally made of PP) of the aluminum plastic film is fused and bonded together through high temperature.

The plastic-aluminum membrane is made of three parts, wherein the innermost layer is a PP layer, the middle layer is an aluminum layer, and the outermost layer is a nylon layer. The thickness of the aluminum-plastic film is different according to batteries with different functions, the thickness is usually 80-160 μm, and due to the material structure of the aluminum-plastic film, the aluminum-plastic film stretches differently in different structural layers in the pit punching process, so that the aluminum-plastic film after pit punching is not flat, but has a bending phenomenon on the outer edge of the pit punching corner, and is usually warped.

Because the aluminium-plastic film unevenness after dashing the hole, so during the heat-seal, there is the seal effect less than ideal easily, the easy fold of aluminium-plastic film during the encapsulation, perhaps direct heat-seal is on the PP layer of aluminium-plastic film, leads to the risk that the weeping appears in electric core later stage.

At present, the following method is generally adopted to solve the problem of abnormal heat sealing caused by uneven aluminum plastic film: adopt twice heat-seals during first heat-seal, first heat-seal time is shorter when also being the upper and lower head heat-seal, carries out the plastic to the plastic-aluminum membrane earlier, then carries out the heat-seal of second time again, fully fuses the PP of plastic-aluminum membrane inlayer together, but this kind of mode is fit for the little condition of plastic-aluminum membrane deformation, adopts twice heat-seals also greatly reduced production efficiency moreover. Secondly, put into the plastic-aluminum membrane with electric core or roll core after the manual compound die, carry out artifical plastic to the plastic-aluminum membrane, then carry out the heat-seal, this kind of mode has the potential safety hazard to operating personnel, and production efficiency is also not high.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing an aluminium-plastic film levels holding device to do benefit to and carry out the flattening to the local unevenness that exists before the aluminium-plastic film heat-seal, and do benefit to and improve the seal effect.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

an aluminum-plastic film flatness holding apparatus for constituting local flatness holding in a heat-sealing process of said aluminum-plastic film, the holding apparatus comprising a support body and two clamping plates, wherein:

the support body is driven to have a feeding motion close to or far away from the aluminum-plastic film;

the two clamping plates are arranged on the supporting body in a sliding mode, have oppositely arranged clamping planes and move close to or away from each other due to driving.

Furthermore, a slide rail is arranged on the support body, and the two clamping plates are arranged on the slide rail in a sliding manner.

Furthermore, the end surface of the slide rail is in an I shape.

Further, a power device is connected to the supporting body in a driving mode; the power device is used for driving the support body to be close to or far away from the aluminum-plastic film.

Further, a soft layer is attached to the surface of each of the holding planes.

Further, the soft layer is made of silica gel.

Furthermore, the thickness of the soft layer is between 0.3mm and 0.5 mm.

Further, each clamping plate is connected with an air cylinder in a driving mode.

Compared with the prior art, the utility model discloses following advantage has:

aluminium-plastic membrane level and smooth holding device, through having of setting up be close to or keep away from aluminium-plastic membrane feed motion's supporter to and set up two splint that can be close to each other or keep away from on the supporter, and through the relative clamping plane who sets up of two splint, can carry out the flattening to the local unevenness of aluminium-plastic membrane before the heat-seal, and the local roughness that keeps aluminium-plastic membrane that can be better, and have higher efficiency and better result of use.

In addition, the sliding rail arranged on the supporting body is beneficial to the sliding of the two clamping plates relative to the supporting body. And the power device arranged on the support body is favorable for driving the support body to be close to or far away from the aluminum-plastic film, so that the two clamping plates can be close to or far away from the aluminum-plastic film. Simultaneously, the setting is on the soft layer of centre gripping plane, can effectively prevent the fish tail that the plastic-aluminum membrane appears at the centre gripping in-process.

In addition, the air cylinders arranged on the two clamping plates are beneficial to driving the two clamping plates to be close to or away from each other, and are beneficial to clamping or unclamping the aluminum plastic film.

Another object of the present invention is to provide an aluminum-plastic film packaging apparatus, which is equipped with at least one aluminum-plastic film leveling and maintaining device as described above.

Further, the aluminum-plastic film flattening and maintaining device corresponds to the corner points of the aluminum-plastic film to be heat-sealed.

The utility model discloses an aluminium-plastic membrane packaging hardware with as above aluminium-plastic membrane level keeping device has the same beneficial effect for prior art, no longer gives unnecessary details here.

Drawings

The accompanying drawings, which form a part of the present disclosure, are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and together with the description serve to explain the present disclosure. In the drawings:

fig. 1 is a schematic structural view of an aluminum-plastic film flatness maintaining device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a state before the aluminum plastic film package according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another view angle of the pre-package state of the aluminum plastic film according to the embodiment of the present invention;

fig. 4 is a schematic structural view of an aluminum-plastic film flatness maintaining device according to an embodiment of the present invention in a use state;

description of reference numerals:

1. a support body; 101. a slide rail; 2. a splint; 3. a power plant; 10. an aluminum plastic film; 20. an electric core; 1001. the ends are warped.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.

In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The present embodiment relates to an apparatus for holding flat an aluminum plastic film, which is capable of holding a local flatness during heat-sealing of an aluminum plastic film 10, especially before heat-sealing, and which mainly comprises a support body 1 and two clamp plates 2 in an integral structure. Wherein, the supporting body 1 has a feeding movement close to or far away from the aluminum plastic film 10 due to driving, the two clamping plates 2 are arranged on the supporting body 1 in a sliding way, the two clamping plates 2 have oppositely arranged clamping planes, and have a movement close to or far away from each other due to driving, thereby being capable of clamping and leveling local unevenness of the aluminum plastic film 10.

Based on the above design concept, an exemplary structure of the aluminum plastic film flattening and holding device of the present embodiment is shown in fig. 1. In combination with fig. 2 and 3, after the aluminum-plastic film 10 is punched, there is a significant upwarp on the outer side of the punched hole, as shown by a warped end 1001 in fig. 2 and 3. After the aluminum-plastic film 10 is punched, the battery cell 20 is placed in the punched hole, and if the aluminum-plastic film 10 is heat-sealed at this time, the wrinkle problem is easily caused.

The aluminum plastic film flattening and holding device of the present embodiment includes a support body 1 and two clamping plates 2. Wherein, the supporter 1 is arranged on a fixed basis, such as a rack, a conveying mechanism for conveying the aluminum-plastic film 10 is arranged on the rack, and the conveying mechanism can adopt a conveying platform or a conveying belt in the prior art to convey the aluminum-plastic film 10 after the pit punching to a designated position. Corresponding to the designated position, the support body 1 is arranged in a sliding way relative to the frame, and the support body 1 can be close to or far away from the aluminum plastic film 10 due to driving. The two clamping plates 2 are arranged on the supporting body 1 in a sliding way. And the two clamping plates 2 have oppositely arranged clamping planes for clamping and leveling the upturned partial aluminum-plastic film 10, namely, the warped end 1001 shown in fig. 2 and 3, and have a movement toward or away from each other by driving to be able to clamp or unclamp the aluminum-plastic film 10.

In order to facilitate the two clamping plates 2 to approach or move away from each other, in the embodiment, a sliding rail 101 is provided on the supporting body 1, and the two clamping plates 2 are slidably disposed on the sliding rail 101. Furthermore, the end face of the slide rail 101 is in an I shape, so that the structure is simple, the processing is convenient, and the sliding of the two clamping plates 2 is facilitated.

It should be understood that, in addition to the above-mentioned structure, other structures may be adopted to achieve the approaching or separating of the two clamping plates 2, such as a screw-slider structure, in which the two sliders are driven to move toward or away from each other by driving the screw to rotate, and the two clamping plates 2 are correspondingly fixed on the two sliders, so that the two clamping plates 2 can also be moved toward or away from each other.

It is also understood that the end surface of the slide rail 101 may be in a dovetail groove shape or other structures besides the i shape.

In order to facilitate the support body 1 to approach or leave the aluminum plastic film 10, in the embodiment, the power device 3 is coupled to the support body 1 in a driving manner, that is, the power device 3 may be disposed on the frame, and the support body 1 is connected to the driving end of the power device 3, so that the support body 1 approaches or leaves the aluminum plastic film 10 by the driving of the power device 3, and further the two clamping plates 2 can approach or leave the aluminum plastic film 10.

It should be noted that, the power device 3 of the present embodiment may employ an electric push rod, an air cylinder or an oil cylinder, or may employ a servo motor, and when employing the servo motor, a lead screw may be disposed at a driving end of the servo motor, and the support body 1 is screwed on the lead screw, and the lead screw is driven by the servo motor to rotate, so as to also implement the linear motion of the support body 1.

To facilitate the approaching and moving apart of the two clamping plates 2, a cylinder is drivingly coupled to each clamping plate 2. Also can correspond two splint 2 in the frame and set up two cylinders, the root of two splint 2 corresponds the power take off who connects at the cylinder.

In order to prevent the aluminum plastic film 10 from being scratched during the clamping process, in this embodiment, a soft layer is attached to the surface of each clamping plane. And preferably, the soft layer is made of silica gel, and the thickness of the soft layer is between 0.3mm and 0.5 mm.

It should be noted that the two clamping plates 2 of the present embodiment are made of stainless steel 304, the thickness of the two clamping jaws is about 2mm, the length of the two clamping jaws is between 20 and 80 mm, and the size of the clamping aluminum plastic film 10 is between 2 and 5mm. And the size of the clamping aluminum plastic film 10 can be adjusted adaptively according to the sizes of different battery cores 20.

In addition, in the embodiment, the cylinders driving the clamping plates 2 to approach or separate from each other, and the power device 3 driving the supporting body 1 to approach or separate from the aluminum plastic film 10 for feeding movement can be adjusted according to the requirements of the actual use conditions, such as the opening distance and speed of the two clamping plates 2, the clamping force and clamping time applied by the two clamping plates 2, and the moving distance of the two clamping plates 2 to approach or separate from the aluminum plastic film 10, so as to facilitate the two clamping plates 2 to smoothly clamp the local uneven part of the aluminum plastic film 10. In addition, the part of the two clamping plates 2 for clamping the aluminum plastic film 10 needs to avoid the packaging position of the heat-sealing end socket, so that the aluminum plastic film 10 is favorably packaged in the clamping state of the two clamping plates 2. After the tape packaging is finished, the two clamping plates 2 are opened and far away from the aluminum-plastic film 10, so that the aluminum-plastic film 10 is released from clamping.

The plastic-aluminum membrane of this embodiment levels holding device, when specifically using, the plastic-aluminum membrane 10 after dashing the hole is carried to the assigned position, and at this moment, opens through two splint 2 of cylinder drive to be close to plastic-aluminum membrane 10 through servo motor drive supporter 1, make two splint 2 that are open state be close to plastic-aluminum membrane 10 promptly, when treating to remove to centre gripping size position, two splint 2 are close to each other, and it is level and smooth to carry out the centre gripping with local upwarping. And then, packaging the battery cell 20, and after the packaging is finished, opening the two clamping plates 2 to be in an open state and returning to a far position, namely moving in a direction far away from the aluminum-plastic film 10, so that the clamping of the aluminum-plastic film 10 is favorably released.

The plastic-aluminum membrane of this embodiment levels holding device, through the supporter 1 that has that sets up and be close to or keep away from plastic-aluminum membrane 10 feed motion to and set up two splint 2 that can be close to each other or keep away from on supporter 1, and through the relative clamping plane that sets up of two splint 2, can carry out the centre gripping flattening to the local unevenness of plastic-aluminum membrane 10 after the dashing hole, and the local roughness that keeps plastic-aluminum membrane 10 that can be better, and have higher flattening efficiency and better result of use.

Secondly, the present embodiment also relates to an aluminum-plastic film packaging device, which is equipped with at least one aluminum-plastic film flatness holding device. As a further improvement, the aluminum plastic film packaging apparatus corresponds to a corner point of the aluminum plastic film 10 to be heat sealed, wherein the corner point of the aluminum plastic film 10 is also the warping end 1001 shown in fig. 2 and 3, and when the aluminum plastic film packaging apparatus is used in a specific application, reference may also be made to the above description, and details are not repeated here.

The plastic-aluminum membrane packaging hardware of this embodiment levels holding device through the plastic-aluminum membrane that uses in the above-mentioned, can dash the unevenness that exists after the hole to plastic-aluminum membrane 10 and carry out the centre gripping flattening, and does benefit to and improves the seal effect.

The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An aluminium-plastic film flatness retaining device, constituting a local flatness retention during heat sealing of said aluminium-plastic film (10), characterized in that it comprises a support body (1) and two clamping plates (2), wherein:

the supporting body (1) is provided with a sliding rail (101), the supporting body (1) is connected with a power device (3) in a driving mode, and the supporting body (1) bears the driving of the power device (3) and has a feeding motion close to or far away from the aluminum-plastic film (10);

the two clamping plates (2) are arranged on the sliding rail (101) in a sliding mode, and the two clamping plates (2) are provided with clamping planes which are arranged oppositely and move close to or away from each other due to driving.

2. The aluminum plastic film flattening and holding device of claim 1, wherein:

the end face of the slide rail (101) is in an I shape.

3. The aluminum plastic film flattening and holding device of claim 1, wherein:

and a soft layer is attached to the surface of each clamping plane.

4. The aluminum plastic film flattening and holding device of claim 3, wherein:

the soft layer is made of silica gel.

5. The aluminum plastic film flattening and holding apparatus of claim 3, wherein:

the thickness of the soft layer is between 0.3mm and 0.5 mm.

6. The aluminum plastic film flattening and holding device of claim 1, wherein:

each clamping plate (2) is connected with an air cylinder in a driving way.

7. An aluminum-plastic film (10) packaging device, characterized in that: the device is equipped with at least one aluminum plastic film flattening holding device according to any one of claims 1 to 6.

8. The aluminum plastic film packaging device of claim 7, wherein: the aluminum-plastic film flattening and retaining device corresponds to the corner point of the aluminum-plastic film (10) to be heat-sealed.