CN212571158U

CN212571158U - Battery top cap structure with upset piece

Info

Publication number: CN212571158U
Application number: CN202021832755.5U
Authority: CN
Inventors: 励建炬
Original assignee: Huizhou Kdl Precision Industry Co ltd
Current assignee: Huizhou Kdl Precision Industry Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-02-19
Anticipated expiration: 2030-08-28

Abstract

The utility model relates to a battery top cap structure with upset piece covers on electric core cavity upper portion, including casing, the upset piece and the negative pole post that are located the casing, dig in the casing and be equipped with first cavity, first cavity central zone is provided with the baffle, it is equipped with circular windowing to dig on the baffle, be provided with the negative pole extension board in the first cavity with the upset piece, the negative pole extension board with negative pole post electric connection, the upset piece with negative pole extension board symmetry sets up circular windowing both sides, first cavity passes through the second cavity and communicates with electric core cavity is indirect. The utility model provides a battery top cap structure with upset piece solves the fragile problem of upset piece that exists among the prior art, improves product life, reinforcing product market competition.

Description

Battery top cap structure with upset piece

Technical Field

The utility model relates to a battery field especially relates to a battery top cap structure with upset piece.

Background

With the development of modern society and the enhancement of environmental protection consciousness of people, more and more devices select lithium batteries as power supplies, such as mobile phones, notebook computers, electric tools, electric automobiles and the like, and a wide space is provided for the application and development of the lithium batteries. Among them, lithium batteries used in electric tools, electric vehicles, and the like are generally called power batteries.

In order to meet the use standard and meet the use requirements of people, the power battery has high capacity, good safety performance and long cycle life. The safety of the power battery is mainly reflected in how to avoid fire or explosion caused by overcharging of the power battery. When the power battery is overcharged, gas can be continuously generated in the power battery, the internal gas pressure of the power battery is rapidly increased, and serious safety accidents can be caused if the over-charging and gas generation of the battery are not prevented in time.

In order to solve the power battery overcharge problem, power battery top cap often sets up a upset piece at present, but the upset piece that has now is many with the inside direct switch-on of power battery, when power battery internal pressure rose, atmospheric pressure directly impacted the upset piece on, the instantaneous pressure that the upset piece received is great, easy damage restricts product life, the urgent need to improve.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a battery top cap structure with upset piece solves the fragile problem of upset piece that exists among the prior art, improves product life, reinforcing product market competition.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a battery top cap structure with upset piece, lid on electric core cavity upper portion, includes the casing, is located upset piece and the negative pole utmost point post of casing, dig in the casing and be equipped with first cavity, first cavity central zone is provided with the baffle, it is equipped with circular windowing to dig on the baffle, be provided with in the first cavity the negative pole extend the board with the upset piece, the negative pole extend the board with negative pole utmost point post electric connection, the upset piece with negative pole extend the board symmetry and set up circular windowing both sides, first cavity passes through the second cavity and communicates with electric core cavity is indirect.

Preferably, the turning sheet divides the first cavity into two independent cavities.

Preferably, the left side of the second cavity is communicated with the first cavity through a plurality of left communication holes, and the lower part of the second cavity is communicated with the battery cell cavity through a plurality of lower communication holes.

Preferably, a flow guiding slope surface is arranged at the right upper corner of the second cavity.

Preferably, the guide slope surface is a plane or a curved surface.

Preferably, the left communication holes are arranged in a rectangular array.

Preferably, the plurality of lower communication holes are arranged in a rectangular array.

Preferably, a fixed sleeve is fixed on the shell, and the turnover sheet is fixed on the fixed sleeve and is in sealing connection with the fixed sleeve.

Preferably, the shell is further provided with a buffering cushion, and the buffering cushion is located at a gap between the shell and the fixing sleeve.

The utility model discloses compare in prior art's beneficial effect and be:

the utility model discloses a battery top cap structure with upset piece solves the fragile problem of upset piece, improves product life, reinforcing product market competition. Specifically, the upset piece sets up at first cavity not with electric core cavity direct intercommunication, but through the indirect intercommunication of second cavity, after electric core cavity atmospheric pressure increase, at first enter into the second cavity, then in entering into first cavity, its route from electric core cavity to second cavity, to first cavity again has a turning, can play effectual cushioning effect, weaken the instantaneous impact force that the upset piece received from this, thereby improve the life of upset piece, guarantee product life.

Drawings

Fig. 1 is a structural diagram of a battery top cover structure with a turning sheet according to an embodiment of the present invention.

Fig. 2 is an enlarged view of the area a in fig. 1.

Detailed Description

To facilitate understanding of those skilled in the art, the present invention will be described in further detail with reference to specific embodiments and drawings.

Referring to fig. 1-2, an embodiment of the present invention includes:

the utility model provides a battery top cap structure with upset piece, lid on electric core cavity upper portion, which comprises a housin 1, be located upset piece 2 and the negative pole utmost point post 3 of casing 1, dig in the casing 1 and be equipped with

first cavity

4, 4 central zone in first cavity are provided with baffle 5, it is equipped with circular windowing 6 to dig on the baffle 5, be provided with negative pole extension board 7 and upset piece 2 in the first cavity 4, negative

pole extension board

7 and 3 electric connection of negative pole utmost point post,

upset piece

2 and 7 symmetries settings of negative pole extension board are in circular 6 both sides of windowing, first cavity 4 is through the indirect intercommunication of second cavity 8 with electric core cavity. The first cavity that the upset piece was located does not communicate with electric core cavity directly, but communicates through the second cavity is indirect, can effectively weaken the instantaneous impact force that the upset piece received, solves the fragile problem of upset piece, improves product life, reinforcing product market competition.

The flip-chip 2 divides the first cavity 4 into two separate cavities. The left side of the second cavity 8 is communicated with the first cavity 4 through a plurality of left communication holes 9, and the lower part of the second cavity 8 is communicated with the battery cell cavity through a plurality of lower communication holes 10. The left communication holes 9 are arranged in a rectangular array, and the lower communication holes 10 are arranged in a rectangular array. A flow guiding slope surface 11 is arranged at the upper right corner of the second cavity 8. The guide slope 11 is a curved surface, and in other embodiments, the guide slope may be a plane.

The shell 1 is fixed with a fixed sleeve 12, and the turning sheet 2 is fixed on the fixed sleeve 12 and is connected with the fixed sleeve 12 in a sealing way. The shell 1 is also provided with a cushion pad 13, and the cushion pad 13 is positioned at the gap between the shell 1 and the fixed sleeve 12.

The turnover piece is arranged in the first cavity and is not directly communicated with the battery cell cavity, but is indirectly communicated with the second cavity, after the air pressure of the battery cell cavity is increased, the turnover piece firstly enters the second cavity, then the turnover piece enters the first cavity, a corner is arranged on the path from the battery cell cavity to the second cavity and then to the first cavity, an effective buffering effect can be achieved, the instant impact force received by the turnover piece is weakened, the service life of the turnover piece is prolonged, and the service life of a product is guaranteed.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships 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.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

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 battery top cap structure with upset piece, its characterized in that covers on electric core cavity upper portion, includes casing (1), upset piece (2) and negative pole post (3) that are located casing (1), dig in casing (1) and be equipped with first cavity (4), first cavity (4) central area is provided with baffle (5), it is equipped with circular windowing (6) to dig on baffle (5), be provided with in first cavity (4) negative pole extension board (7) with upset piece (2), negative pole extension board (7) with negative pole post (3) electric connection, upset piece (2) with negative pole extension board (7) symmetry sets up circular windowing (6) both sides, first cavity (4) are through second cavity (8) and electric core cavity indirect intercommunication.

2. The battery top cover structure with the flip sheet according to claim 1, wherein the flip sheet (2) divides the first cavity (4) into two separate cavities.

3. The battery top cover structure with the turnover sheet as claimed in claim 1, wherein the left side of the second cavity (8) is communicated with the first cavity (4) through a plurality of left communication holes (9), and the lower part of the second cavity (8) is communicated with the cell cavity through a plurality of lower communication holes (10).

4. The battery top cover structure with the turning sheet as claimed in claim 1, wherein the second cavity (8) is provided with a flow guiding slope (11) at the upper right corner.

5. The battery top cover structure with the turning sheet as claimed in claim 4, wherein the flow guiding slope (11) is a plane or a curved surface.

6. The battery top cover structure with the turnover sheet as claimed in claim 3, wherein the left communication holes (9) are arranged in a rectangular array.

7. The battery top cover structure with the turning sheet as claimed in claim 3, wherein the plurality of lower communication holes (10) are arranged in a rectangular array.

8. The battery top cover structure with the turning sheet as claimed in claim 1, wherein a fixing sleeve (12) is fixed on the housing (1), and the turning sheet (2) is fixed on the fixing sleeve (12) and is connected with the fixing sleeve (12) in a sealing manner.

9. The battery top cover structure with the turning sheet as claimed in claim 8, wherein a cushion pad (13) is further provided on the housing (1), and the cushion pad (13) is located at a gap between the housing (1) and the fixing sleeve (12).