CN210897412U

CN210897412U - Case cover of soft package battery

Info

Publication number: CN210897412U
Application number: CN201922207423.1U
Authority: CN
Inventors: 陈伟; 李恒月; 贺京玮; 周昊
Original assignee: Kunshan Ju Innovative Energy Technology Co Ltd
Current assignee: Kunshan Ju Innovative Energy Technology Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-06-30
Anticipated expiration: 2029-12-10

Abstract

The utility model discloses a laminate polymer battery's case lid, include: the box cover comprises a box cover body, wherein the rear end of the box cover body is formed into an upwards protruding bulge part so as to limit an avoiding space towards the lower side of the box cover body, a connecting part is arranged between the bulge part and the outer edge of the box cover body in the left-right direction, and the length of the connecting part is smaller than that of the bulge part in the front-back direction. According to the utility model discloses a laminate polymer battery's case lid through be equipped with linking portion between the outer border of uplift portion and case lid body, can promote the structural strength of case lid body, uses more reliably, guarantees the life of case lid.

Description

Case cover of soft package battery

Technical Field

The utility model belongs to the technical field of the battery technique and specifically relates to a laminate polymer battery's case lid is related to.

Background

The box cover of the soft package lithium ion battery in the related technology has lower structural strength and is not reliable enough to be used.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.

Therefore, the utility model provides a laminate polymer battery's case lid, laminate polymer battery's case lid structural strength is high, the use is more reliable.

According to the utility model discloses a laminate polymer battery's case lid, include: the box cover comprises a box cover body, wherein the rear end of the box cover body is formed into an upwards protruding bulge part so as to limit an avoiding space towards the lower side of the box cover body, a connecting part is arranged between the bulge part and the outer edge of the box cover body in the left-right direction, and the length of the connecting part is smaller than that of the bulge part in the front-back direction.

According to the utility model discloses a laminate polymer battery's case lid through be equipped with linking portion between the outer border of uplift portion and case lid body, can promote the structural strength of case lid body, uses more reliably, guarantees the life of case lid.

According to an embodiment of the present invention, the front end of the joining portion extends downward sloping forward, and the rear end of the joining portion extends downward sloping rearward.

According to another embodiment of the present invention, the engagement portions are in smooth transition with the outer edge of the case cover body and the ridge portion, respectively.

According to another embodiment of the present invention, the engaging portions include two portions symmetrically arranged on the left and right sides of the ridge portion.

Optionally, a recess is provided on the lid body near an outer edge of the front end thereof, the recess being recessed downward with respect to the lid body.

Optionally, an upward convex routing convex part is arranged in the middle of the case cover body in the left-right direction, and the routing convex part extends in the front-back direction and is communicated with the raised part.

Furthermore, the raised part is smoothly connected with the case cover body through a first transition slope surface, and the wiring convex part is smoothly connected with the case cover body through a second transition slope surface.

Further, the total height of the box cover body and the raised part in the up-down direction is H1, wherein H1 is 116mm, and the total height of the box cover body and the routing convex part in the up-down direction is H2, wherein H2 is 89 mm.

According to the utility model discloses a further embodiment, the wall thickness of case lid body is 1 mm.

According to the utility model discloses a further embodiment, the case lid still includes the frame connecting portion, the frame connecting portion center on this body coupling of case lid is in the periphery border of case lid body.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a perspective view of a case cover of a pouch battery according to an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a perspective view of another view angle of the case cover of the pouch battery according to the embodiment of the present invention;

fig. 4 is a top view of a case cover of a pouch battery according to an embodiment of the present invention;

fig. 5 is a front view of a case cover of a pouch battery according to an embodiment of the present invention;

fig. 6 is a side view of the case lid of the laminate polymer battery according to the embodiment of the invention.

Reference numerals:

the box cover comprises a box cover 100, a box cover body 10, a bulge part 11, an avoiding space 11a, a connecting part 12, a notch part 13, a wiring convex part 14, a first transition slope surface 15, a second transition slope surface 16, a reinforcing rib 17, a frame connecting part 20 and a connecting hole 21.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

A case cover 100 of a pouch battery according to an embodiment of the present invention is described below with reference to fig. 1 to 5.

As shown in fig. 1 and fig. 2, the case lid 100 of the pouch battery according to the embodiment of the present invention includes a case lid body 10, and the rear end of the case lid body 10 is formed as an upwardly protruding ridge 11 to define an avoiding space 11a at the lower side (i.e., the inner side of the case lid body 10) facing the case lid body 10, so as to increase the accommodating space inside the pouch battery and reduce the horizontal occupied space.

Further, an engaging portion 12 is provided between the bulging portion 11 and the outer edge of the cover main body 10 in the left-right direction to reinforce the structural strength between the bulging portion 11 and the outer edge of the cover main body 10. Further, the length of the joining portion 12 in the front-rear direction is smaller than the length of the rising portion 11, so that the structural strength is increased while saving production materials.

According to the utility model discloses a laminate polymer battery's case lid 100 through be equipped with linking portion 12 between the outside border at uplift portion 11 and case lid body 10, can promote case lid body 10's structural strength, uses more reliably, guarantees case lid 100's life.

According to an embodiment of the present invention, the front end of the connection portion 12 is inclined downward and extends forward, and the rear end of the connection portion 12 is inclined downward and extends rearward, so that the connection between the outer edge of the protruding portion 11 and the case cover body 10 and the connection portion 12 is more natural and gentle, and the connection strength between the outer edge of the protruding portion 11 and the case cover body 10 can be enhanced.

According to the utility model discloses a further embodiment, linking portion 12 respectively with the outer border and the 11 smooth transitions of uplift of case lid body 10, link up more naturally, has promoted the aesthetic property of outward appearance, and the harmony between the structure is better.

According to the utility model discloses a still another embodiment, linking portion 12 includes two that bilateral symmetry set up, and two linking portions 12 are established respectively in the left and right sides of uplift portion 11, and the structure has the symmetry beautiful, and the structural strength of the uplift portion 11 left and right sides can be strengthened simultaneously to two linking portions 12, and more importantly can be so that the structural strength of the case lid body 10 left and right sides is more balanced.

As shown in fig. 1, optionally, a concave portion 13 is disposed on the outer edge of the case lid body 10 near the front end thereof, and the concave portion 13 is recessed downward relative to the case lid body 10, so that fracture and damage caused by stress concentration at the front end of the case lid body 10 can be avoided, and the service life of the case lid body 10 is ensured.

As shown in fig. 4, the left and right sides of the outer edge of the case cover body 10 near the front end thereof are provided with notches 13, so that the left and right sides of the front end of the case cover body 10 have the technical effect of avoiding stress concentration.

Optionally, a routing convex portion 14 is disposed in the middle of the case lid body 10 in the left-right direction, the routing convex portion 14 protrudes upward relative to the upper surface of the case lid body 10, the routing convex portion 14 extends in the front-back direction, and the routing convex portion 14 is communicated with the raised portion 11. It can be understood that, a plurality of electric core modules have in laminate polymer battery inside, the circuit of a plurality of electric core modules can be unified by preceding laying backward at laminate polymer battery's middle part, the top at electric core module is established to case lid 100 lid, walk the middle part that line convex part 14 established at case lid body 10, can be used for holding the circuit of a plurality of electric core modules, the circuit that is about to a plurality of electric core modules is all integrated in walking the line space that line convex part 14 was injectd, reduce occupation space, the integrated level is higher.

Further, the raised part 11 and the box cover body 10 are smoothly connected through the first transition slope surface 15, so that the engagement between the raised part 11 and the box cover body 10 is more natural. The routing convex part 14 and the case cover body 10 are smoothly connected through the second transition slope 16, so that the connection between the routing convex part 14 and the case cover body 10 is more natural.

Specifically, the length L of the lid 100 in the front-rear direction is 1645mm, and the width W of the lid 100 in the left-right direction is 1067 mm.

Further, total height H1 of case lid body 10 and uplift 11 is 116mm in the up-down direction, and total height H2 of case lid body 10 and the line convex part 14 is 89mm in the up-down direction, through setting up case lid 100 to reasonable height, can promote the space utilization in the soft packing battery, and the degree of integrating is higher. As can be seen in fig. 6, the height of the raised portions 11 is greater than the height of the routing tabs 14, making the structural arrangement of the cover 100 more reasonable.

According to the utility model discloses a further embodiment, the wall thickness of case lid body 10 is 1mm, under the prerequisite of ensureing structural strength, can alleviate structural weight and manufacturing cost.

According to the utility model discloses a further embodiment, case lid 100 still includes frame connecting portion 20, and frame connecting portion 20 is equipped with connecting hole 21 around the periphery border that case lid body 10 was connected at case lid body 10 on frame connecting portion 20 to be connected with other part (for example laminate polymer battery's box) cooperations conveniently.

The utility model provides a case lid 100 is in the plane degree of flatness of the internal part of coplanar all within 1mm, ensures smooth surface, does not warp, bad phenomenon such as distortion, and the spraying has 0.2 mm's fire-resistant and heat-insulating material on the lower surface of case lid 100 (on the interior lateral wall face promptly) to prevent laminate polymer battery's thermal runaway.

The cover body 10 is further provided with a reinforcing rib 17 to reinforce the structural strength of the cover body 10.

Other constructions and operations of the case cover 100 of the pouch battery according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a case lid of laminate polymer battery which characterized in that includes: the box cover comprises a box cover body, wherein the rear end of the box cover body is formed into an upwards protruding bulge part so as to limit an avoiding space towards the lower side of the box cover body, a connecting part is arranged between the bulge part and the outer edge of the box cover body in the left-right direction, and the length of the connecting part is smaller than that of the bulge part in the front-back direction.

2. The case cover for the pouch battery according to claim 1, wherein the front end of the engaging portion extends forward and downward and the rear end of the engaging portion extends rearward and downward.

3. The case cover for the pouch battery according to claim 1, wherein the engaging portions are smoothly transited to the outer edge of the case cover body and the raised portion, respectively.

4. The case cover for the pouch battery according to claim 1, wherein the two engaging portions are symmetrically disposed at left and right sides of the protruding portion.

5. The case cover for the pouch battery according to any one of claims 1 to 4, wherein a depressed portion is provided on the case cover body at an outer edge near a front end thereof, the depressed portion being depressed downward with respect to the case cover body.

6. The case cover of the pouch battery according to any one of claims 1 to 4, wherein a wiring convex portion protruding upward is provided at the middle portion of the case cover body in the left-right direction, and the wiring convex portion extends in the front-back direction and is communicated with the raised portion.

7. The case lid of the laminate polymer battery of claim 6, wherein the raised portion is smoothly connected with the case lid body through a first transition slope, and the routing convex portion is smoothly connected with the case lid body through a second transition slope.

8. The pouch cover according to claim 6, wherein a total height of the cover body and the raised portion in the up-down direction is H1, wherein H1 is 116mm, and a total height of the cover body and the routing protrusion in the left-right direction is H2, wherein H2 is 89 mm.

9. The case cover of the pouch battery according to claim 1, wherein the wall thickness of the case cover body is 1 mm.

10. The case lid of the laminate polymer battery of claim 1, further comprising: the frame connecting part surrounds the case cover body and is connected to the outer peripheral edge of the case cover body.