CN207009572U

CN207009572U - The flanging and angle seal structure of soft package lithium battery

Info

Publication number: CN207009572U
Application number: CN201720949813.4U
Authority: CN
Inventors: 李杨; 冯树南; 从长杰; 王驰伟
Original assignee: Tianjin EV Energies Co Ltd
Current assignee: Tianjin EV Energies Co Ltd
Priority date: 2017-08-01
Filing date: 2017-08-01
Publication date: 2018-02-13
Anticipated expiration: 2027-08-01

Abstract

The flanging and angle seal structure of a kind of soft package lithium battery, including angle seal structure and folded edges are the utility model is related to, angle seal structure encapsulates the corner for being formed at battery core, the cut formation hypotenuse in corner of the angle seal structure；Folded edges are that the side seal area of battery core two is formed through flanging twice, and folded edges are fixedly connected with battery core main body.The flanging and angle seal structure of soft bag lithium ionic cell provided by the utility model, it is after flexible packing lithium ion battery completes, angle envelope is carried out to its four angles, angle is honored as a queen to be cut with moulds of industrial equipment to its corner, then opposite side carries out double-fold, and the metal part among aluminum-plastic packaging film is wrapped in flanging.Difficulty of the flexible packing lithium ion battery in assembling is improved, and adds the security after the completion of the assembling of flexible-packed battery module, is advantageous to save assembly space, prevents battery short circuit.

Description

The flanging and angle seal structure of soft package lithium battery

Technical field

It the utility model is related to lithium battery manufacturing field, the flanging and angle seal structure of particularly a kind of soft package lithium battery.

Background technology

As the pith of new-energy automobile, lithium-ion-power cell also has been to be concerned by more and more people.It is wide at present The lithium-ion battery system of general application is increasingly difficult to meet the needs of client, in mass energy density and volume energy density It is required for constantly improving and innovating.Soft package lithium ion power battery is after machining at present, and often surrounding is without place Reason, thus greatly adds idle space, certain difficulty that the assembled belt to module is come；Meanwhile in module group assembling, Also occur that the wedge angle of aluminum plastic film scratches the situation of other battery surface, thus add the qualified of module to a certain extent Rate, reduce security risk.

The content of the invention

The technical problems to be solved in the utility model is to provide the flanging and angle seal structure of a kind of soft package lithium battery, so as to change Difficulty of the kind flexible packing lithium ion battery in assembling, the security after the completion of the module assembling of increase flexible-packed battery.

To solve above technical problem, the technical solution adopted in the utility model is：A kind of flanging of soft package lithium battery and Angle seal structure, including：

--- angle seal structure, encapsulation are formed at the corner of battery core, the cut formation hypotenuse in corner of the angle seal structure；

--- folded edges, the side seal area of battery core two is formed through flanging twice, folded edges are fixedly connected with battery core main body.

Further, the folded edges and seal side angle degree are 15 ° -75 °.

Further, the first folding of the folded edges is close to the second folding, wherein, the first folding width is 1.5-4.0mm.

Further, the angle seal structure and lug side angle are 15 ° -75 °.

Further, described folded edges are fixed with battery core main body with adhesive tape.

The flanging and angle seal structure of soft bag lithium ionic cell provided by the utility model, are in flexible packing lithium ion battery After completing, angle envelope is carried out to its four angles, angle is honored as a queen to be cut with moulds of industrial equipment to its corner, and then opposite side is carried out Double-fold, the metal part among aluminum-plastic packaging film is wrapped in flanging.Flexible packing lithium ion battery is improved in assembling Difficulty, and add flexible-packed battery module assembling after the completion of security, be advantageous to save assembly space, prevent that battery is short Road.

Brief description of the drawings

Accompanying drawing herein is used for providing the part for further explanation of the present utility model, forming the application, this practicality New schematic description and description is used for explaining the utility model, does not form to improper restriction of the present utility model.

Fig. 1 is the structural representation before the sealing angle of the utility model angle.

Fig. 2 is the structural representation behind the sealing angle of the utility model angle.

Fig. 3 is the structural representation after the utility model double-fold.

Fig. 4 is the partial schematic diagram of folded edges.

In figure, 1- battery cores, 2- hypotenuses, 21- angles envelope line, 3- folded edges, the foldings of 31- first, the foldings of 32- second, 4- lugs, 5- Adhesive tape.

Embodiment

In order that those skilled in the art are better understood from the utility model, below in conjunction with refer to the attached drawing and in conjunction with the embodiments Further clear, complete explanation is made to the utility model.It should be noted that in the case where not conflicting, in the application Feature in embodiment and embodiment can be mutually combined.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly Connection.

The flanging and angle seal structure for the soft package lithium battery that a kind of typical embodiment of the utility model provides, including angle envelope Structure and folded edges.With reference to figure 3, described angle seal structure encapsulation is formed at the corner of battery core 1, the corner warp of the angle seal structure Cut to form hypotenuse 2.Described folded edges 3 are that 1 liang of side seal area of battery core is formed through flanging twice, folded edges 3 and battery core 1 Main body is fixedly connected.

The flanging and angle seal structure of soft package lithium battery described in embodiment of above, made in flexible packing lithium ion battery After the completion of, angle envelope is carried out to its four angles, angle is honored as a queen to be cut with moulds of industrial equipment to its corner, and then opposite side is carried out two-fold Side, the metal part among aluminum-plastic packaging film is wrapped in flanging.

Below with a kind of soft package lithium battery of lug in both sides（Thickness >=11mm）It is embodiment to the requires of the utility model The technical scheme of protection makees further clear, complete explanation.

Fig. 1 is the structure after the completion of normal battery core production.On the basis of Fig. 1 structures, using hot sealing process to battery core Four angles carry out angle envelope, and corner dotted line is angle envelope line 21 in Fig. 1, and angle envelope line 21 and the side angle of lug 4 are 15 ° -75 °, and edge should Angle envelope line 21 seals, and angle envelope temperature is 120 DEG C -200 DEG C and forms angle seal structure, after having been sealed after four angles, seals on the outside of line and cuts out along angle Corner cut portion forms hypotenuse as shown in Figure 2.Then double-fold is carried out to two side seal areas of battery core, as shown in figure 4, the first folding 31 is wide 1.5-4.0mm is spent, is rolled on the inside of battery core, with seal side angle degree is 180 ° during bending；The requirement of second folding 32 is no more than battery core master Body and meet battery core dimensions, be 15 ° -75 ° with seal side angle degree also to rolling on the inside of battery core.The folded edges reference of formation Fig. 4, its first folding 31 are close to the second folding 32, and folded edges 3 are overall with being 15 ° -75 ° with seal side angle degree.After the completion of flanging, Fixed with adhesive tape 5, final battery is as shown in Figure 3.

The scope of the requires of the utility model protection is not limited to above embodiment, for those skilled in the art Speech, the utility model can have a various deformation and change, it is all made within design of the present utility model with principle any repair Change, improve and equivalent substitution all should be included in the scope of protection of the utility model within.

Claims

1. the flanging and angle seal structure of a kind of soft package lithium battery, it is characterised in that including：

--- angle seal structure, encapsulation are formed at battery core（1）Corner, the cut formation hypotenuse in corner of the angle seal structure（2）；

--- folded edges（3）, to battery core（1）Two side seal areas are formed through flanging twice, folded edges（3）With battery core（1）Main body It is fixedly connected.

2. the flanging and angle seal structure of soft package lithium battery according to claim 1, it is characterised in that：The folded edges （3）It it is 15 ° -75 ° with seal side angle degree.

3. the flanging and angle seal structure of soft package lithium battery according to claim 2, it is characterised in that：The folded edges First folding（31）With the second folding（32）It is close to, wherein, the first folding（31）Width is 1.5-4.0mm.

4. the flanging and angle seal structure of the soft package lithium battery according to claim 1,2 or 3, it is characterised in that：The angle envelope Structure and lug（4）Side angle is 15 ° -75 °.

5. the flanging and angle seal structure of soft package lithium battery according to claim 4, it is characterised in that：Described folded edges （3）With battery core（1）Main body adhesive tape（5）It is fixed.