CN212062605U

CN212062605U - End socket

Info

Publication number: CN212062605U
Application number: CN202020913916.7U
Authority: CN
Inventors: 韩园园
Original assignee: Hunan Xinminya New Energy Technology Co Ltd; Sichuan Xinminya Battery Technology Co Ltd; Suzhou Lingwei New Energy Technology Co Ltd
Current assignee: Hunan Lingpai Energy Storage Technology Co ltd; Hunan Lingpai New Energy Research Institute Co ltd; Hunan Lingpai New Energy Technology Co Ltd; Hengyang Lingpai New Energy Technology Co Ltd; Hunan Lead Power Dazhi Technology Inc
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2020-12-01
Anticipated expiration: 2030-05-26

Abstract

The application provides a head, the head includes head body and briquetting. The pressure block is provided with a side face, the side face is connected with the top face of the seal head body, and a round angle is arranged at the connecting part. When adopting the sealing head carries out the top seal to laminate polymer battery, the encapsulation area can be widened to the briquetting, and the side the top surface and fillet combined action makes the plastic-aluminum membrane be in laminate polymer battery's apex angle position forms even fold, has reduced the angle position damage of apex angle position. In addition, when the encapsulation, the side the top surface the fillet with leave the clearance between the laminate polymer battery's the surface, the sol at fold position can overflow in the clearance, reduced the crowded glue of apex angle position, further reduced the corner position damage at apex angle position, improved the security and the yield in the packaging process after the laminate polymer battery encapsulates.

Description

End socket

Technical Field

The utility model relates to a lithium ion battery equipment field, in particular to head.

Background

With the advancement of mobile device technology, the demand for rechargeable batteries is increasing. Low-capacity rechargeable batteries may be used for mobile phones, notebook computers, portable cameras, etc., and high-capacity rechargeable batteries may be used for power sources of electric vehicles, etc.

Lithium ion power batteries are widely used in the field of electric vehicles. The mainstream lithium ion power battery in the industry mainly comprises three types, namely a square type, a soft package type, a cylindrical type and the like. The biggest characteristics in the laminate polymer battery structure lie in using the plastic-aluminum complex film as packaging material, and main advantage includes: 1) the aluminum plastic film is externally packaged, so that explosion cannot easily occur, and the safety performance is high; 2) the aluminum plastic film has light weight and high space utilization rate, so the energy density is high; 3) the battery has small internal resistance and longer service life, so the cycle performance is good. In recent years, pouch batteries have been developed at a high rate.

The soft package battery needs to be packaged by a heat seal package during production. The package is divided into a top seal and a side seal. Wherein, the top seal means: and packaging the top surface of the battery cell with the pole lug. The side seal means: two side surfaces adjacent to the top surface are encapsulated. At present, the capping head that laminate polymer battery used, what domestic was used all is a structure: the packaging surface is provided with a polar lug groove. When the structure is used for manufacturing a large battery (namely, the battery is large in thickness), like a power soft package battery, glue is easily extruded at the connecting part of the top seal and the two side seals, and holes are easily formed under the molten glue, so that an aluminum plastic film is corroded; in addition, at the connecting part of the top seal and the side seal, the aluminum-plastic film is seriously wrinkled, so that the inside and the outside of the battery are easily communicated, and water vapor enters the battery. Most importantly, when the battery is shaped in the post process, the places with serious wrinkles are easy to cause corner damage, and the battery is scrapped.

Therefore, it is necessary to design a sealing head to solve the technical problem of serious glue squeezing and wrinkling at the same side sealing connection part of the top seal in the conventional soft package battery packaging.

SUMMERY OF THE UTILITY MODEL

For solving the crowded glue in the same side seal of apex seal connection position and beat the serious technical problem of wrinkle in the encapsulation of current laminate polymer battery, the utility model discloses a head, include: a closure body including a top surface; and the pressing block is arranged on the top surface and is connected with the top surface.

In some embodiments, the pressure block is integrally connected with the closure body.

In some embodiments, the compact comprises: the first pressing block comprises a first side surface, and the first side surface is perpendicular to and connected with the top surface; and the second pressing block comprises a second side surface which is vertical to the top surface and is connected with the top surface.

In some embodiments, the first pressing block and the second pressing block are respectively arranged on two sides of the top surface, and the first side surface, the second side surface and the top surface form a concave groove.

In some embodiments, the first and second compacts are symmetrically disposed on the top surface.

In some embodiments, a rounded corner is provided at the junction of the first side surface and the top surface; and a fillet is arranged at the joint of the second side surface and the top surface.

In some embodiments, the header body comprises a package face, wherein the top face is perpendicular to the package face; and the first side surface and the second side surface are perpendicular to the packaging surface.

In some embodiments, the package face is provided with a polar lug groove.

To sum up, the utility model provides a head, the head includes the head body and follows convex briquetting is gone up to the top surface of head body. The pressure block is provided with a side face, the side face is connected with the top face of the seal head body, and a round angle is arranged at the connecting part. When adopting the sealing head carries out the top seal to laminate polymer battery, the encapsulation area can be widened to the briquetting, and the side the top surface and fillet combined action makes the plastic-aluminum membrane be in laminate polymer battery's apex angle position forms even fold, has reduced the angle position damage of apex angle position. In addition, when the encapsulation, the side the top surface the fillet with leave the clearance between the laminate polymer battery's the surface, the sol at fold position can overflow in the clearance, reduced the crowded glue of apex angle position, further reduced the corner position damage at apex angle position, improved the security and the yield in the packaging process after the laminate polymer battery encapsulates.

Drawings

Fig. 1 is a schematic structural diagram of a seal head provided according to an embodiment of the present application;

FIG. 2 is an enlarged view of region P of FIG. 1;

3A and 3B are schematic diagrams illustrating a process of packaging a pouch battery by using a seal head provided by the embodiment of the application; and

fig. 4 is a detailed view of the region Q in fig. 3B.

Detailed Description

The following description is presented to enable any person skilled in the art to make and use the invention, and is provided in the context of particular applications and its requirements. Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present application. Thus, the present application is not limited to the embodiments shown, but is to be accorded the widest scope consistent with the claims.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting.

These and other features of the present application, as well as the operation and function of the related elements of structure and the combination of parts and economies of manufacture, may be significantly improved upon consideration of the following description. All of which form a part of this application, with reference to the accompanying drawings. It is to be expressly understood, however, that the drawings are for the purpose of illustration and description only and are not intended as a definition of the limits of the application.

These and other features of the present application, as well as the operation and function of the related elements of the structure, and the economic efficiency of assembly and manufacture, are significantly improved by the following description. All of which form a part of this application with reference to the accompanying drawings. It is to be expressly understood, however, that the drawings are for the purpose of illustration and description only and are not intended as a definition of the limits of the application. It should also be understood that the drawings are not drawn to scale.

For top seal homonymy seal juncture easily appears crowded glue and beat the serious technical problem of wrinkle in solving current laminate polymer battery encapsulation, the utility model provides a head. Fig. 1 is a schematic structural diagram of a sealing head 100 according to an embodiment of the present application. The sealing head 100 can be used for sealing a top of a soft package battery, and packaging a battery core of the soft package battery in a packaging bag of the soft package battery. The packaging bag can be an aluminum plastic film packaging bag. For ease of understanding, in the following description of the present application, the function of the closure 100 described herein is described by taking an aluminum plastic film package as an example. The flexible package battery can be a lithium ion battery, a hydrogen fuel cell or a nuclear fuel cell and the like. The flexible package battery can be applied to various fields, for example, the flexible package battery can be a mobile phone battery, a computer battery, an automobile battery, an unmanned aerial vehicle battery and the like.

Specifically, the closure 100 may include a closure body 200 and a pressure block 300.

The header body 200 may include an encapsulation surface 210. The packaging surface 210 can perform hot pressing on the aluminum plastic film packaging bag of the soft package battery. The plastic-aluminum membrane wrapping bag is in the hot pressing effect is down warp and the adhesion, and then realizes the encapsulation. The sealing surface 210 may be a flat surface so that the plastic-aluminum film packaging bag forms a uniform seal under the action of heat and pressure.

The header body 200 may be provided with a lug groove 220. The tab slot 220 may be a U-shaped through slot and is disposed on the package face 210. When the packaging surface 210 is used for hot-pressing the aluminum plastic film packaging bag of the soft package battery, the tab of the soft package battery can pass through the tab slot 220 and cannot be damaged by the hot pressing of the packaging surface 210. The number of the pole ear grooves 220 is related to the structure of the soft package battery. For example, when the positive tab and the negative tab of the pouch battery are both disposed at one end of the pouch battery; two polar lug grooves 220 are arranged on the seal head body 200. When the positive tab and the negative tab of the soft package battery are respectively arranged at two ends of the soft package battery; the end socket body 200 is provided with a polar lug groove 220.

The closure body 200 may include a top surface 230. Top surface 230 is perpendicular to package face 210. When packaged, the top surface 230 faces the surface of the pouch battery provided with the tab.

The closure body 200 may be block-shaped. The closure body 200 may be made of a metal material. The metallic material may include, but is not limited to, a copper block, a steel block, and the like. The heating device may heat the header body 200 to make the header body 200 have a certain temperature. In some embodiments, the heating device can be a heating rod disposed on the closure body 200. The sealing head body 200 can conduct heat to transfer the temperature thereof to the aluminum plastic film packaging bag of the soft package battery. After the plastic-aluminum film packaging bag is heated, the driving device drives the seal head 100 to move and extrude the plastic-aluminum film packaging bag through the packaging surface 210. The aluminum-plastic film packaging bag deforms and is adhered under the combined action of heating and extrusion (namely hot pressing), and then packaging is realized. During packaging, the temperature of each part of the end socket body 200 should be kept consistent so that the sealing formed by the aluminum-plastic film packaging bag under the action of hot pressing is uniform.

The compact 300 is disposed on the top surface 230 and is connected to the top surface 230. In some embodiments, the pressure block 300 may be integrally connected with the header body 200. For example, the compacts 300 may be block-like structures that protrude from the top surface 230 of the header body 200. Of course, the compact 300 may also be a separate block and secured to the top surface 230 by a threaded connection. In some embodiments, the compact 300 may include a first compact 310 and a second compact 320.

Fig. 2 is an enlarged view of the region P in fig. 1. The first pressure piece 310 may include a first side 311. The first side 311 may be planar. The first side 311 is perpendicular to the package face 210. Also, the first side 311 may be perpendicular to and intersect the top 230. The intersection of the first side 311 and the top 230 may be provided with a first rounded corner 312. The first fillet 312 may be formed by chamfering the intersection. The internal chamfer machining may include, but is not limited to, cutting chamfers, casting chamfers, hand sanding chamfers, and the like.

Fig. 3A and 3B are schematic diagrams illustrating a process of packaging a pouch battery 500 by using a sealing head 100 according to an embodiment of the present application. Fig. 3B is a bottom view of the view shown in fig. 3A. Fig. 4 is a detailed view of the region Q in fig. 3B. Referring to fig. 3A, two sealing heads 100 are respectively disposed above and below the pouch cell 500. The surface of the pouch battery 500 is an aluminum plastic film packaging bag to be packaged (not shown in fig. 3A, 3B and 4). For the sake of distinction, in the following description, the "upper cap" means the cap 100 located above the pouch battery 500 aluminum plastic film packing bag, and the "lower cap" means the cap 100 located below the pouch battery 500 aluminum plastic film packing bag. The upper sealing head moves downwards, and the lower sealing head moves upwards. And the packaging surface 210 of the upper sealing head and the packaging surface 210 of the lower sealing head are buckled and extruded to package the aluminum plastic film packaging bag at the top of the soft package battery 500. The tab 520 of the pouch battery 500 passes through the tab slot 220. Referring to fig. 3B and 4, in the process of encapsulation, the first press block 310 widens the area of encapsulation. The top surface 230, the first side 311 and the first fillet 312 coact make the aluminum-plastic film packaging bag forms even folds at the top corner 510 accessory of the laminate polymer battery 500, effectively reducing the corner damage near the top corner 510, and improving the safety performance of the laminate polymer battery 500. In addition, when packaged, the top surface 230, the first side surface 311 and the first rounded corner 312 are not in contact with the surface of the pouch battery 500, and a gap 10 is formed between the top surface 230, the first side surface 311 and the first rounded corner 312 and the surface of the pouch battery 500. The sol near the top corner 510 can uniformly overflow into the gap 10, thus reducing the accumulation of overflow glue and further reducing the corner damage caused by the accumulation of overflow glue.

The second pressing block 320 has the same structure and function as the first pressing block 310. Second compact 320 may include a second side 321. The second side 321 may be planar. The second side 321 may be perpendicular to the package face 210 (shown in fig. 3A). The second side 321 may be perpendicular to and intersect the top 230. The intersection of the second side 321 and the top 230 may be provided with a second rounded corner 322 (shown in fig. 3B). The second pressing block 320 and the first pressing block 310 are respectively disposed at both sides of the top surface 230. First pressing piece 310 and second pressing piece 320 may be symmetrically disposed on top surface 230. The first side 311, the second side 321 and the top 230 form a concave groove (e.g., as shown in fig. 3B).

In conclusion, upon reading the present detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure can be presented by way of example only, and not limitation. Those skilled in the art will appreciate that the present application is intended to cover various reasonable variations, adaptations, and modifications of the embodiments described herein, although not explicitly described herein. Such alterations, improvements, and modifications are intended to be suggested by this application and are within the spirit and scope of the exemplary embodiments of the application.

Furthermore, certain terminology has been used in this application to describe embodiments of the application. For example, "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various portions of this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined as suitable in one or more embodiments of the application.

It should be appreciated that in the foregoing description of embodiments of the present application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of such feature. Alternatively, various features may be dispersed throughout several embodiments of the application. This is not to be taken as an admission that any of the features of the claims are essential, and it is fully possible for a person skilled in the art to extract some of them as separate embodiments when reading the present application. That is, embodiments in the present application may also be understood as an integration of multiple sub-embodiments. And each sub-embodiment described herein is equally applicable to less than all features of a single foregoing disclosed embodiment.

In some embodiments, numbers expressing quantities or properties useful for describing and claiming certain embodiments of the present application are to be understood as being modified in certain instances by the terms "about", "approximately" or "substantially". For example, "about", "approximately" or "substantially" may mean a ± 20% variation of the value it describes, unless otherwise specified. Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that may vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the embodiments of the application are approximations, the numerical values set forth in the specific examples are reported as precisely as possible.

Each patent, patent application, publication of a patent application, and other material, such as articles, books, descriptions, publications, documents, articles, and the like, cited herein is hereby incorporated by reference. All matters hithertofore set forth herein except as related to any prosecution history, may be inconsistent or conflicting with this document or any prosecution history which may have a limiting effect on the broadest scope of the claims. Now or later associated with this document. For example, if there is any inconsistency or conflict in the description, definition, and/or use of terms associated with any of the included materials with respect to the terms, descriptions, definitions, and/or uses associated with this document, the terms in this document are used.

Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Accordingly, the disclosed embodiments are presented by way of example only, and not limitation. Those skilled in the art may implement the present application in alternative configurations according to the embodiments of the present application. Thus, embodiments of the present application are not limited to those embodiments described with precision in the application.

Claims

1. A closure, comprising:

the sealing head comprises a sealing head body, a sealing head body and a sealing cover, wherein the sealing head body comprises a top surface and a packaging surface, and the top surface is vertical to the packaging surface; and

and the pressing block is arranged on the top surface and is connected with the top surface.

2. A closure according to claim 1, wherein the pressure block is integrally connected to the closure body.

3. A closure according to claim 1, wherein the ballast comprises:

the first pressing block comprises a first side surface, and the first side surface is perpendicular to and connected with the top surface; and

and the second pressing block comprises a second side surface which is perpendicular to and connected with the top surface.

4. A closure according to claim 3, wherein a rounded corner is provided at the junction of the first side surface and the top surface; and

and a fillet is arranged at the joint of the second side surface and the top surface.

5. A closure according to claim 3, wherein the first and second pressure blocks are respectively disposed on both sides of the top surface, and the first and second side surfaces form a concave groove with the top surface.

6. A closure head according to claim 3, wherein the first and second pressure blocks are symmetrically arranged on the top surface.

7. A closure according to claim 3,

the first side surface and the second side surface are perpendicular to the packaging surface.

8. A closure according to claim 7, wherein the sealing surface is provided with an ear canal.