CN216311916U

CN216311916U - Battery cap with display function for explosion-proof lithium battery

Info

Publication number: CN216311916U
Application number: CN202122587532.8U
Authority: CN
Inventors: 戴永记; 肖奎; 王元宝
Original assignee: Xinxiang Xuxing Power Supply Technology Co ltd
Current assignee: Xinxiang Xuxing Power Supply Technology Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-04-15
Anticipated expiration: 2031-10-26

Abstract

The embodiment of the utility model relates to the technical field of lithium batteries, in particular to a battery cap with a display function for an explosion-proof lithium battery, which comprises a sealing sleeve, a cap body arranged in the sealing sleeve and an exhaust hole arranged at the side part of the cap body and used for exhausting gas, wherein a fixing piece and a window used for observing the fixing piece are arranged at the central position of the cap body; a sealing sheet which deforms towards the cap body after being pressed is arranged below the cap body; the cap body is characterized in that a first puncture body capable of puncturing the fixing piece is arranged on the sealing piece, and a second puncture body capable of puncturing the sealing piece is arranged below the cap body. The utility model has the beneficial effects that: this application accessible window observes the form of stationary blade to this judgement sealing piece is whether pierced through, thereby judges whether need change the block.

Description

Battery cap with display function for explosion-proof lithium battery

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a battery cap with a display function for an explosion-proof lithium battery.

Background

Batteries are the most commonly used portable power supply equipment, and with the increasing awareness of environmental protection, rechargeable batteries are increasingly favored by consumers. The batteries are generally charged in series, so that a large charging current exists in the entire series battery pack during the charging process. When the battery pack is overcharged, the voltage of the battery rises rapidly with the increase of polarization, and rapid decomposition of the electrolyte in the battery is caused. The decomposition phenomenon releases a great amount of heat and a large amount of gas, so that the internal pressure of the battery is increased sharply, and finally, the phenomenon of battery explosion is generated. In order to avoid the explosion phenomenon during the overcharge of the battery, the conventional rechargeable battery is generally provided with an explosion-proof device, an explosion-proof component is pushed open by using the internal pressure generated during the overcharge of the battery, and gas is exhausted out of a battery body from an exhaust hole;

the existing explosion-proof device usually adopts a cap with a piercing type exhaust structure, after a large amount of gas appears inside a battery, the sealing sheet inside the cap deforms, so that the sealing sheet contacts with the piercing body to be pierced, the gas inside the battery is discharged, the sealing sheet is pierced, the cap is timely replaced, but the existing cap is difficult to judge whether the sealing sheet is pierced, and whether the cap needs to be replaced or not is difficult to determine.

Therefore, a battery cap for an explosion-proof lithium battery with a display function is required to overcome the above problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, embodiments of the present invention provide a battery cap with a display function for an explosion-proof lithium battery, which determines whether a sealing sheet is pierced by observing the shape of the fixing sheet through a window, thereby achieving the purpose of solving the problems in the background art.

In order to achieve the above purpose, the embodiments of the present invention specifically adopt the following technical solutions: a battery cap with a display function for an explosion-proof lithium battery comprises a sealing sleeve, a cap body arranged in the sealing sleeve and an exhaust hole which is formed in the side part of the cap body and used for exhausting gas, wherein a fixing piece and a window used for observing the fixing piece are arranged at the central position of the cap body; a sealing sheet which deforms towards the cap body after being pressed is arranged below the cap body; the cap body is characterized in that a first puncture body capable of puncturing the fixing piece is arranged on the sealing piece, and a second puncture body capable of puncturing the sealing piece is arranged below the cap body.

As a further improvement of the above technical solution:

the second puncture body is fixedly connected to one side of the window, and the fixing sheet is arranged inside the window.

The first puncture body is sleeved inside the second puncture body.

And a plurality of puncture heads for puncturing the sealing sheet are arranged at the end part of the second puncture body.

The length of the first puncture body is greater than the length of the second puncture body.

The cap body passes through the fixed block with the gasket and fixes the setting in the inside of seal cover.

The embodiment of the utility model has the beneficial effects that:

when the inside of battery produced a large amount of gas, the gasket warp to the direction of gasket under the effect of gas pressure to make first puncture body shift up and pierce through the stationary blade, simultaneously because the deformation of gasket self, thereby the gasket is pierced with the second puncture body and is released pressure gas after being pierced through, this application accessible window observes the form of stationary blade promptly, whether is pierced through with this judgement gasket, thereby judges whether need change the block.

Drawings

FIG. 1 is a schematic diagram of a first perspective of the present invention;

FIG. 2 is a schematic diagram of a second perspective of the present invention;

fig. 3 is a schematic cross-sectional view of the present invention.

In the figure: 1. sealing sleeves; 2. a cap body; 3. an exhaust hole; 4. sealing the sheet; 5. a fixing sheet; 6. a window; 7. a first puncture body; 8. a second piercing body; 81. a puncture head; 9. and (5) fixing blocks.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

Referring to fig. 1 to 3, the embodiment of the utility model discloses a battery cap with a display function for an explosion-proof lithium battery, which comprises a sealing sleeve 1, a cap body 2 arranged inside the sealing sleeve 1, and an exhaust hole 3 arranged at the side part of the cap body 2 and used for exhausting gas, wherein a fixing piece 5 and a window 6 used for observing the fixing piece 5 are arranged at the central position of the cap body 2, and whether the fixing piece 5 is deformed or not is observed through the window 6; a sealing sheet 4 which is deformed towards the cap body 2 after being pressed is arranged below the cap body 2; a first puncture body 7 capable of puncturing the fixing piece 5 is arranged on the sealing piece 4, and a second puncture body 8 capable of puncturing the sealing piece 4 is arranged below the cap body 2;

when a large amount of gas is generated in the battery, the sealing sheet 4 deforms towards the sealing sheet 4 under the action of gas pressure, so that the first puncture body 7 moves upwards to puncture the fixing sheet 5, and meanwhile, due to the deformation of the sealing sheet 4, the sealing sheet 4 is in contact with the second puncture body 8 to release pressure gas after being punctured, namely, the form of the fixing sheet 5 can be observed through the window 6, so that whether the sealing sheet 4 is punctured is judged, and whether the cap needs to be replaced is judged;

when the window 6 observes that the fixing plate 5 has a protrusion or the fixing plate 5 is pierced, the sealing plate 4 can be judged to be pierced or contacted with the second piercing body 8 without piercing, but in order to ensure the use safety, the cap needs to be replaced, namely, when the window 6 observes that the fixing plate 5 has a deformation, the cap needs to be replaced.

As further illustration of the present application: second puncture body 8 fixed connection is in one side of window 6, and stationary blade 5 sets up in the inside of window 6, and first puncture body 7 cup joints the inside at second puncture body 8 for the gasket 4 receives the gas pressure after taking place to warp, and the puncture that first puncture body 7 can be accurate is on stationary blade 5.

As further illustration of the present application: the end of the second puncture body 8 is provided with a plurality of puncture heads 81 for puncturing the sealing sheet 4, and after the sealing sheet 4 is contacted with the second puncture body 8, the plurality of puncture heads 81 are provided to ensure that the sealing sheet 4 can be punctured by the second puncture body 8.

As further illustration of the present application: the length of the first puncture body 7 is greater than the length of the second puncture body 8, so that after the sealing sheet 4 deforms, the first puncture body 7 can firstly contact the fixing sheet 5 to puncture the fixing sheet 5 or make the fixing sheet 5 deform, and the sealing sheet 4 cannot continuously deform to enable the first puncture body 7 to contact the fixing sheet 5 due to the fact that gas is discharged after the second puncture body 8 punctures the sealing sheet 4 firstly, namely, the first puncture body 7 can firstly contact the fixing sheet 5 to ensure the accuracy of judgment on whether the cap is replaced.

As further illustration of the present application: the cap body 2 passes through the fixed setting in the inside of seal cover 1 of fixed block 9 with gasket 4, fastens gasket 4 through fixed block 9 and seals in the inside of seal cover 1 to ensure the deflection of gasket 4 after the battery produces a large amount of gas.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the utility model, and the technical scheme after the changes or substitutions can fall into the protection scope of the utility model.

Claims

1. A battery cap with a display function for an explosion-proof lithium battery comprises a sealing sleeve (1), a cap body (2) arranged in the sealing sleeve (1), and an exhaust hole (3) formed in the side part of the cap body (2) and used for exhausting gas, and is characterized in that a fixing piece (5) and a window (6) used for observing the fixing piece (5) are arranged at the central position of the cap body (2);

a sealing sheet (4) which deforms towards the cap body (2) after being pressed is arranged below the cap body (2);

the cap is characterized in that a first puncture body (7) capable of puncturing the fixing piece (5) is arranged on the sealing piece (4), and a second puncture body (8) capable of puncturing the sealing piece (4) is arranged below the cap body (2).

2. The cap for lithium explosion-proof battery with display function as claimed in claim 1, wherein the second penetration body (8) is fixedly attached to one side of the window (6), and the fixing piece (5) is disposed inside the window (6).

3. The battery cap for an explosion-proof lithium battery with a display function according to claim 2, wherein the first puncture body (7) is fitted inside the second puncture body (8).

4. The battery cap for an explosion-proof lithium battery with a display function according to claim 1, wherein a plurality of piercing heads (81) for piercing the sealing sheet (4) are provided at an end of the second piercing body (8).

5. The battery cap for an explosion-proof lithium battery with a display function according to claim 1, wherein the length of the first penetration body (7) is greater than the length of the second penetration body (8).

6. The battery cap with the display function for the explosion-proof lithium battery as claimed in claim 1, wherein the cap body (2) and the sealing sheet (4) are fixedly arranged inside the sealing sleeve (1) through a fixing block (9).