CN212230518U

CN212230518U - Laminate polymer battery utmost point ear packaging structure

Info

Publication number: CN212230518U
Application number: CN202021166635.6U
Authority: CN
Inventors: 郭银良; 张艳萍; 樊折红; 李震; 杨晓东
Original assignee: Henan Lvdong Energy Technology Co ltd
Current assignee: Henan Lvdong Energy Technology Co ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2020-12-25
Anticipated expiration: 2030-06-22

Abstract

A soft package battery tab packaging structure comprises an upper seal head and a lower seal head which are arranged in parallel and in a joint mode, tab slots which are arranged oppositely are formed in the upper seal head and the lower seal head and located between the upper seal head and the lower seal head, a lower preheating block is fixedly arranged on the lower seal head and corresponds to the tab slots, the lower preheating block is flush with the slot bottom surfaces of the tab slots, an upper preheating block is arranged on the upper seal head and corresponds to the tab slots, the upper preheating block is in joint with the lower preheating block, and the upper preheating block is arranged on the upper seal head in a lifting mode; the upper sealing head is fixedly provided with a preheating auxiliary block corresponding to the upper preheating block, and the preheating auxiliary block is attached to the outer side surface of the upper preheating block and is in sliding fit with the upper preheating block and the lower preheating block. When the battery is packaged, the upper end enclosure and the lower end enclosure are closed to package the top seal of the soft package battery, the preheating block is closed to heat the positive electrode tab and the negative electrode tab, the tab film is helped to melt, the preheating block and the end enclosure are the same in temperature, time and pressure, the packaging efficiency is improved, the packaging effect is guaranteed, and the leakage phenomenon at the packaging tab can not occur.

Description

Laminate polymer battery utmost point ear packaging structure

Technical Field

The utility model relates to a laminate polymer battery encapsulation technical field, concretely relates to laminate polymer battery utmost point ear packaging structure.

Background

At present, the soft package battery packaging generally comprises three parts, namely top sealing, side sealing and bottom sealing, wherein the side sealing and the bottom sealing are directly sealed by using a sealing head (copper or stainless steel) to package an aluminum plastic film, so that the sealing is firm, and the good packaging can be basically ensured (liquid leakage and air leakage are avoided) by adjusting the temperature, the pressure and the packaging time of the sealing head; however, the top sealing needs to encapsulate two aluminum-plastic films with two positive and negative tabs, and the sealing performance of the encapsulation is difficult to guarantee only by adjusting the temperature and pressure and the encapsulation time through the end enclosure, so that the phenomenon of poor sol of tab films often occurs, and the leakage phenomenon easily occurs at the tab of the encapsulated battery, thereby causing the scrapping of the battery.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, the utility model provides a laminate polymer battery utmost point ear packaging structure.

A soft package battery tab packaging structure comprises an upper end enclosure and a lower end enclosure which are arranged in parallel and in a joint mode, tab slots which are arranged oppositely are formed in the positions, located between the upper end enclosure and the lower end enclosure, of the upper end enclosure, a lower preheating block is fixedly arranged on the lower end enclosure and corresponds to the tab slots, the lower preheating block is flush with the slot bottom surfaces of the tab slots, an upper preheating block is arranged on the upper end enclosure and corresponds to the tab slots, the upper preheating block is in joint with the lower preheating block, and the upper preheating block is arranged on the upper end enclosure in a lifting mode; and a preheating auxiliary block is fixedly arranged on the upper end enclosure at a position corresponding to the upper preheating block, and the preheating auxiliary block is attached to the outer side surface of the upper preheating block and is in sliding fit with the upper preheating block and the lower preheating block.

Further comprises the following steps: the upper preheating block comprises a strip-shaped substrate and a preheating plate, the substrate and the preheating plate are both horizontally arranged, and the preheating plate is positioned in the middle of the substrate and arranged along the length direction of the substrate; the upper seal head and the lower seal head are respectively provided with a vertical plate and a transverse plate which are fixedly connected with each other, the vertical plates of the upper seal head and the lower seal head are overlapped with each other, the tab slot is positioned between the vertical plates of the upper seal head and the lower seal head, and the preheating plate is arranged in parallel with the vertical plates and spans across the tab slot; the upper end part of the preheating auxiliary block is attached to and fixedly connected with the transverse plate of the upper end enclosure, and the lower end part of the preheating auxiliary block is attached to and in sliding fit with the preheating plate. The upper end part of the preheating auxiliary block obtains heat from the upper end enclosure and transmits the heat to the preheating plate of the upper preheating block through the lower end part of the preheating auxiliary block, so that the preheating block can rapidly heat up when a primary tab is packaged.

Further comprises the following steps: vertical bolts penetrate through the end parts of the two ends of the base plate and are in sliding fit with the base plate, the end heads of the lower ends of the bolts are blocked on the base plate, the upper ends of the bolts are fixedly connected with the transverse plate of the upper end enclosure, and a pressure spring is movably sleeved between the base plate and the upper end enclosure on each bolt.

Further comprises the following steps: gaps are reserved between the preheating plates and the vertical plates of the upper end enclosure and at the positions of the lug slotting positions, and gaps are reserved between the lower preheating blocks and the vertical plates of the lower end enclosure and at the positions of the lug slotting positions. The battery top seal (tab direction) requires 1-2mm of aluminum plastic film top seal reservation and 1-2mm of tab film reservation, in order to prevent the preheating block from pressing the tab film when the preheating block is closed.

The utility model has the advantages that: by arranging the upper preheating block and the lower preheating block, when the battery is packaged, the upper end enclosure and the lower end enclosure are closed to heat, the upper preheating block and the lower preheating block can also heat the lug to provide heat for the lug, and the heat provided when the upper end enclosure and the lower end enclosure are used for packaging the lug of the soft package battery is added, so that the lug glue is fully melted in the specified packaging time and pressure, and the packaging effect is ensured; the upper preheating block is provided with the preheating auxiliary block in a fitting manner, so that the upper preheating block can be rapidly heated, the time interval between two times of packaging is shortened, and the packaging efficiency is improved; when the battery is packaged, the upper and lower seal heads are closed to package the top seal (in the direction of the tab) of the soft package battery, and meanwhile, the preheating block is closed to heat the positive and negative tabs so as to help the tab films melt, so that the temperature, time and pressure are the same, the packaging efficiency is improved, the packaging effect is ensured, and the leakage phenomenon of the packaged tab is avoided; the preheating blocks are connected with the upper end enclosure by screws and springs, so that the upper preheating blocks and the lower preheating blocks can tightly press the battery tabs when the upper end enclosure and the lower end enclosure are closed.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

FIG. 3 is a schematic sectional view of the present invention;

fig. 4 is the assembly structure diagram of the upper preheating block and the preheating auxiliary block in the present invention.

In the figure, 1, an upper end enclosure; 2. a lower end enclosure; 3. an upper preheating block; 31. a pressure spring; 32. a substrate; 33. preheating a plate; 4. a lower preheating block; 5. preheating the auxiliary block; 51. a lower end plate; 52. connecting the transverse plates; 53. connecting a vertical plate; 54. an upper end plate; 6. and slotting the tabs.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings. It should be noted that the terms of orientation such as left, middle, right, up and down in the examples of the present invention are only relative to each other or are referred to the normal use status of the product, and should not be considered as limiting.

A soft package battery tab packaging structure is shown in figures 1 and 2 and comprises an upper end enclosure 1 and a lower end enclosure 2 which are arranged in parallel and in a joint mode, tab slots 6 which are arranged oppositely are formed in the positions, located between the upper end enclosure 1 and the lower end enclosure 2, of the upper end enclosure 1, a lower preheating block 4 is fixedly arranged on the lower end enclosure 2 corresponding to the tab slots 6, the lower preheating block 4 is flush with the slot bottom surfaces of the tab slots 6, an upper preheating block 3 is arranged on the upper end enclosure 1 corresponding to the tab slots 6, the upper preheating block 3 is in joint with the lower preheating block 4, and the upper preheating block 3 is arranged on the upper end enclosure 1 in a lifting mode; a preheating auxiliary block 5 is fixedly arranged on the upper end enclosure 1 corresponding to the upper preheating block 3, and the preheating auxiliary block 5 is attached to the outer side surface of the upper preheating block 3 and is in sliding fit with the upper preheating block and the lower preheating block.

As shown in fig. 4, the upper preheating block 3 includes a strip-shaped substrate 32 and a preheating plate 33, the substrate 32 and the preheating plate 33 are both horizontally disposed, and the preheating plate 33 is located in the middle of the substrate 32 and is disposed along the longitudinal direction of the substrate 32; the upper seal head 1 and the lower seal head 2 are respectively provided with a vertical plate and a transverse plate which are fixedly connected with each other, the vertical plates of the upper seal head 1 and the lower seal head 2 are overlapped with each other, the tab slot 6 is positioned between the vertical plates of the upper seal head 1 and the lower seal head 2, and the preheating plate 33 is arranged in parallel with the vertical plates and stretches across the tab slot 6; preheat the upper end tip of auxiliary block 5 with the diaphragm laminating and the fixed connection of upper cover 1, preheat the lower extreme tip of auxiliary block 5 with preheat the laminating of board 33 and sliding fit, it is specific preheat auxiliary block 5 and include lower extreme end plate 51 and upper end plate 54, connect diaphragm 52 and connection riser 53 integration between lower extreme end plate 51 and the upper end plate 54 in proper order and be connected, lower extreme end plate 51 with preheat the laminating of board 33 and sliding fit, upper end plate 54 with the diaphragm laminating and the fixed connection of upper cover 1, connect diaphragm 52 and connect riser 53 to constitute L shape structure and shunt away base plate 32.

As shown in fig. 2 and fig. 3, vertical bolts are inserted through and slidably fitted to both end portions of the base plate 32, the lower end of each bolt is stopped on the base plate 32, the upper end of each bolt is fixedly connected to the transverse plate of the upper end enclosure 1, and a pressure spring 31 is movably sleeved on each bolt between the base plate 32 and the upper end enclosure 1.

Gaps are reserved between the preheating plates 33 and the vertical plates of the upper seal head 1 and at the positions of the lug slots 6, and gaps are reserved between the lower preheating blocks 4 and the vertical plates of the lower seal head 2 and at the positions of the lug slots 6.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a laminate polymer battery utmost point ear packaging structure, is including the upper cover and the low head that just laminate and set up side by side lie in the utmost point ear fluting that sets up in opposite directions, its characterized in that on upper cover and the low head between the two: a lower preheating block is fixedly arranged on the lower end enclosure corresponding to the position of the tab slotting, the lower preheating block is flush with the bottom surface of the tab slotting, an upper preheating block is arranged on the upper end enclosure corresponding to the position of the tab slotting, the upper preheating block is attached to the lower preheating block, and the upper preheating block is arranged on the upper end enclosure in a liftable manner; and a preheating auxiliary block is fixedly arranged on the upper end enclosure at a position corresponding to the upper preheating block, and the preheating auxiliary block is attached to the outer side surface of the upper preheating block and is in sliding fit with the upper preheating block and the lower preheating block.

2. The soft-package battery tab packaging structure of claim 1, characterized in that: the upper preheating block comprises a strip-shaped substrate and a preheating plate, the substrate and the preheating plate are both horizontally arranged, and the preheating plate is positioned in the middle of the substrate and arranged along the length direction of the substrate; the upper seal head and the lower seal head are respectively provided with a vertical plate and a transverse plate which are fixedly connected with each other, the vertical plates of the upper seal head and the lower seal head are overlapped with each other, the tab slot is positioned between the vertical plates of the upper seal head and the lower seal head, and the preheating plate is arranged in parallel with the vertical plates and spans across the tab slot; the upper end part of the preheating auxiliary block is attached to and fixedly connected with the transverse plate of the upper end enclosure, and the lower end part of the preheating auxiliary block is attached to and in sliding fit with the preheating plate.

3. The soft-package battery tab packaging structure of claim 2, characterized in that: vertical bolts penetrate through the end parts of the two ends of the base plate and are in sliding fit with the base plate, the end heads of the lower ends of the bolts are blocked on the base plate, the upper ends of the bolts are fixedly connected with the transverse plate of the upper end enclosure, and a pressure spring is movably sleeved between the base plate and the upper end enclosure on each bolt.

4. The soft-package battery tab packaging structure of claim 2, characterized in that: gaps are reserved between the preheating plates and the vertical plates of the upper end enclosure and at the positions of the lug slotting positions, and gaps are reserved between the lower preheating blocks and the vertical plates of the lower end enclosure and at the positions of the lug slotting positions.