CN211045505U

CN211045505U - Power lithium ion battery shell structure

Info

Publication number: CN211045505U
Application number: CN201921739473.8U
Authority: CN
Inventors: 温恒
Original assignee: Ganzhou Norway Technology Co ltd
Current assignee: Ganzhou Norway Technology Co ltd
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2020-07-17
Anticipated expiration: 2029-10-16

Abstract

The utility model relates to a lithium ion battery technical field specifically is a power lithium ion battery shell structure, which comprises an outer shell body, interior casing and head, establish the cavity in the shell body, interior casing is inserted and is established in the cavity, the holding tank has been seted up to the top lateral wall of shell body, the head overlap joint has the annular inserted block of inserting and establishing in the holding tank in the upper end of shell body and its bottom fixed mounting, the cavity is equipped with the dovetail that is annular array and distributes to the evagination, the bottom integrated into one piece of interior casing has the slider of inserting and establishing in the dovetail, the top of interior casing runs through the head and extends in the outside. The utility model discloses novel structure, reasonable in design, the assembly of being convenient for uses through the cooperation that sets up arc ejector pad, spring and reference column and shell fragment and constant head tank, not only can realize the quick assembly disassembly to battery case, has good fixed effect moreover, has certain practicality.

Description

Power lithium ion battery shell structure

Technical Field

The utility model relates to a lithium ion battery technical field specifically is a power lithium ion battery shell structure.

Background

The lithium ion battery has the characteristics of high specific energy, long cycle life, environmental friendliness and the like, is a battery system with great development potential, and is increasingly widely applied to various portable mobile electronic products, electric tools and new energy related industries. However, the following problems still exist in the power lithium ion battery during the actual use process:

1. in the process of continuous use of the power lithium ion battery, the internal pressure of the shell is increased due to quick charge or other reasons, but the shell of the power lithium ion battery in the prior art has weak pressure relief capacity, cannot be timely relieved, and is easy to cause phenomena such as battery explosion and the like;

2. power lithium ion battery shell structure function singleness under the prior art, and be integrated into one piece mostly, be unfavorable for dismantling the installation to the efficiency of lithium ion battery processing has been reduced, is unfavorable for production.

Therefore, a battery case structure capable of releasing pressure in time and being conveniently disassembled is needed. In view of this, we propose a power lithium ion battery case structure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a power lithium ion battery shell structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a power lithium ion battery shell structure, includes shell body, interior casing and head, establish the cavity in the shell body, interior casing is inserted and is established in the cavity, the holding tank has been seted up to the top lateral wall of shell body, the head overlap joint has the annular inserted block of inserting and establishing in the holding tank in the upper end of shell body and its bottom fixed mounting, the cavity is outwards concave to be equipped with the dovetail that is the distribution of annular array, the bottom integrated into one piece of interior casing has the slider of inserting and establishing in the dovetail, the top of interior casing runs through the head and extends in the outside.

Preferably, one side of keeping away from interior casing of holding tank is equipped with the movable groove, be equipped with arc ejector pad, spring and reference column in proper order from the left hand right side in the movable groove, spring one end and arc ejector pad fixed connection, spring other end fixed connection is on the lateral wall of movable groove, the head is equipped with the spacing groove with movable groove phase position, reference column one end and arc ejector pad fixed connection, the reference column other end runs through the spring in proper order and plug in the spacing inslot.

Preferably, the mirror symmetry of the upper end of the holding tank is provided with an elastic sheet, the upper end of the annular insertion block is provided with a positioning groove, and the elastic sheet is clamped in the positioning groove.

Preferably, a plurality of pressure relief holes B are formed in the side wall of the end socket in a penetrating mode, and pressure relief holes A matched with the pressure relief holes B are formed in the lower end of the inner shell.

Preferably, an organ type sealing block is arranged at the upper end of the pressure relief hole A in the dovetail groove, one end of the organ type sealing block is fixedly connected with the inner shell, and the other end of the organ type sealing block is tightly attached to the inner side wall of the outer shell.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the outer shell and the inner shell are provided with the up-down sliding structures, so that the space inside the shell can be timely changed according to the internal pressure, and the effect of timely pressure relief is achieved; through setting up pressure release hole A and pressure release hole B cooperation and using, can play the effect of further pressure release to greatly reduced the possibility of battery explosion.

2. The utility model discloses novel structure, reasonable in design, the assembly of being convenient for uses through the cooperation that sets up arc ejector pad, spring and reference column and shell fragment and constant head tank, not only can realize the quick assembly disassembly to battery case, has good fixed effect moreover, has certain practicality.

Drawings

Fig. 1 is a front view of the structure of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line a-a of FIG. 1;

FIG. 3 is an enlarged view of area A of FIG. 1;

fig. 4 is an enlarged schematic view of the region B in fig. 1.

In the figure: the sealing structure comprises an outer shell 1, a cavity 101, a dovetail groove 102, an accommodating groove 103, a movable groove 104, an inner shell 2, a pressure relief hole A201, a sealing head 3, a pressure relief hole B301, a limiting groove 302, a sliding block 4, an annular insertion block 5, a positioning groove 501, an arc-shaped push block 6, a positioning column 7, a spring 8, an elastic sheet 9 and an organ-type sealing block 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution: the utility model provides a power lithium ion battery shell structure, including shell body 1, interior casing 2 and head 3, establish cavity 101 in the shell body 1, interior casing 2 inserts and establishes in cavity 101, holding tank 103 has been seted up to the top lateral wall of

shell body

1, 3 overlap joints of head have the annular inserted block 5 of inserting and establishing in holding tank 103 in the upper end of shell body 1 and its bottom integrated into one piece, cavity 101 is outwards concave to be equipped with the dovetail 102 that is the annular array and distributes, the bottom integrated into one piece of interior casing 2 is equipped with inserts the slider 4 of establishing in dovetail 102, the top of interior casing 2 is run through head 3 and is extended in the outside. Through setting up slider 4 and dovetail 102 cooperation use, can play the spacing effect of direction, avoid interior casing 2 to take place the skew when reciprocating, cause phenomenon such as internal environment unstability to take place.

As shown in fig. 1 and 3, a movable groove 104 is formed in one side of the accommodating groove 103, which is far away from the inner housing 2, an arc-shaped pushing block 6, a spring 8 and a positioning column 7 are sequentially arranged in the movable groove 104 from left to right, one end of the spring 8 is fixedly connected with the arc-shaped pushing block 6, and the fixing mode is adhesive fixing. The other end of the spring 8 is bonded on the side wall of the movable groove 104, a limiting groove 302 is arranged at the position, corresponding to the movable groove 104, of the end socket 3, one end of the positioning column 7 is fixedly adhered to the arc-shaped pushing block 6, and the other end of the positioning column 7 penetrates through the spring 8 in sequence and is inserted into the limiting groove 302. When annular inserted block 5 inserts and establishes in holding tank 103, thereby arc ejector pad 6 receives the extrusion that comes from annular inserted block 5 to removing in activity groove 104, and reference column 7 extrudees spring 8 and pegs graft in spacing groove 302 under the drive of arc ejector pad 6 to make head 3 and shell body 1 reach fixed effect, whole easy operation, the quick assembly disassembly of being convenient for.

As shown in fig. 3, the upper end mirror symmetry of holding tank 103 is equipped with shell fragment 9, and shell fragment 9 passes through the fix with screw on shell body 1, and the upper end of annular inserted block 5 is equipped with constant head tank 501, and shell fragment 9 joint is in constant head tank 501. Through setting up shell fragment 9 and constant head tank 501 cooperation and using, can fix annular inserted block 5 in holding tank 103 fast.

As shown in fig. 1, a plurality of pressure relief holes B301 are formed through the side wall of the sealing head 3, and a pressure relief hole a201 matched with the pressure relief hole B301 is formed at the lower end of the inner housing 2. Through setting up pressure release hole A201 and the cooperation of pressure release hole B301 and using, can play the effect of further pressure release.

As shown in fig. 1 and 4, an accordion seal block 10 is disposed at an upper end of the pressure relief hole a201 in the dovetail groove 102, one end of the accordion seal block 10 is bonded to the inner case 2, and the other end of the accordion seal block 10 is tightly attached to an inner side wall of the outer case 1. Through setting up sealed piece 10 of organ formula, can prevent that the outside air from entering into interior casing 2 through pressure release hole A201 in, play good sealed effect.

The working principle is as follows: at first with slider 4 alignment dovetail 102, peg graft in shell body 1 with interior casing 2, fix head 3 at the top of shell body 1 next, this in-process, when annular inserted block 5 inserts and establishes in holding tank 103, thereby arc ejector pad 6 receives the extrusion that comes from annular inserted block 5 to removing in movable groove 104, and reference column 7 extrudees spring 8 and pegs graft in spacing groove 302 under the drive of arc ejector pad 6, thereby make head 3 and shell body 1 reach fixed effect, whole easy operation, the quick assembly disassembly of being convenient for. And when the battery constantly drops into use in the later stage, the outside inflation of inside atmospheric pressure grow of interior casing 2, at this moment because interior casing 2 is sliding connection with shell body 1, consequently inside atmospheric pressure that grows gradually can constantly promote interior casing 2 along shell body 1 upward movement, thereby make the inner space grow, reach the effect of decompression, and when pressure is too big, interior casing 2 is shifted up to topmost, pressure release hole A201 just is located same water flat line with pressure release hole B301 this moment, play the effect of further pressure release, and when inside and outside pressure is the same, interior casing 2 moves down through inertia and resumes the primary position.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a power lithium ion battery shell structure, includes shell body (1), interior casing (2) and head (3), its characterized in that: establish cavity (101) in outer casing (1), interior casing (2) are inserted and are established in cavity (101), holding tank (103) have been seted up to the top lateral wall of outer casing (1), head (3) overlap joint has annular inserted block (5) of inserting and establishing in holding tank (103) at the upper end of outer casing (1) and its bottom fixed mounting, cavity (101) outwards are concavely equipped with dovetail (102) that are the annular array and distribute, the bottom integrated into one piece of interior casing (2) is equipped with inserts slider (4) of establishing in dovetail (102), the top of interior casing (2) is run through head (3) and is extended in the outside.

2. The power lithium ion battery case structure of claim 1, wherein: one side of keeping away from interior casing (2) of holding tank (103) is equipped with movable groove (104), be equipped with arc ejector pad (6), spring (8) and reference column (7) from the left hand right side in proper order in movable groove (104), spring (8) one end and arc ejector pad (6) fixed connection, spring (8) other end fixed connection is on the lateral wall of movable groove (104), head (3) are equipped with spacing groove (302) with movable groove (104) corresponding position, reference column (7) one end and arc ejector pad (6) fixed connection, reference column (7) other end runs through spring (8) and plug in spacing groove (302) in proper order.

3. The power lithium ion battery case structure of claim 1, wherein: the upper end mirror symmetry of holding tank (103) is equipped with shell fragment (9), the upper end of annular inserted block (5) is equipped with constant head tank (501), shell fragment (9) joint is in constant head tank (501).

4. The power lithium ion battery case structure of claim 1, wherein: run through on head (3) the lateral wall and be provided with a plurality of pressure release holes B (301), the lower extreme of interior casing (2) is equipped with and pressure release hole B (301) assorted pressure release hole A (201).

5. The power lithium ion battery case structure of claim 4, wherein: the upper end that lies in pressure release hole A (201) in dovetail (102) is equipped with organ formula sealing block (10), the one end and interior casing (2) fixed connection of organ formula sealing block (10), the other end of organ formula sealing block (10) closely laminates with the inside wall of shell body (1).