CN213546421U

CN213546421U - Explosion-proof valve paster, secondary battery and car

Info

Publication number: CN213546421U
Application number: CN202022591688.9U
Authority: CN
Inventors: 何金磊
Original assignee: Shanghai Lanjun New Energy Technology Co Ltd
Current assignee: Shanghai Lanjun New Energy Technology Co Ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-06-25
Anticipated expiration: 2030-11-10

Abstract

An embodiment of the utility model provides an explosion-proof valve paster, secondary battery and car relates to the secondary battery field. This explosion-proof valve paster includes paster main part and pressure release boss, and the pressure release boss sets up in paster main part, is provided with the perforating hole in the paster main part, is provided with the exhaust hole in the pressure release boss, and the exhaust hole extends to the perforating hole to with the perforating hole intercommunication, paster main part is used for laminating on explosion-proof valve. The embodiment of the utility model provides a can effectively block the entering of electrolyte in explosion-proof valve department to can make the inside and outside pressure balance of explosion-proof valve, when avoiding appearing the high temperature and being heated, form air current or inside and outside too big pressure differential rapidly, lead to protection paster structure or function impaired.

Description

Explosion-proof valve paster, secondary battery and car

Technical Field

The utility model relates to a secondary battery field particularly, relates to an explosion-proof valve paster, secondary battery and car.

Background

In the prior art, an explosion-proof valve patch and an explosion-proof valve form a cavity; when the electric core is heated at high temperature, the anti-explosion valve patch can be arched and even fall off.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an explosion-proof valve paster, secondary battery and car, it can effectively block the entering of electrolyte in explosion-proof valve department to can make the inside and outside pressure balance of explosion-proof valve, when avoiding appearing the high temperature and being heated, form air current or inside and outside too big pressure differential rapidly, lead to protection paster structure or function impaired.

The embodiment of the utility model is realized like this:

in a first aspect, the utility model provides an explosion-proof valve paster for the laminating is on secondary battery's explosion-proof valve, the explosion-proof valve paster includes paster main part and pressure release boss, the pressure release boss set up in the paster main part, be provided with the perforating hole in the paster main part, be provided with the exhaust hole on the pressure release boss, the exhaust hole extends to the perforating hole, and with the perforating hole intercommunication, the paster main part is used for the laminating to be in on the explosion-proof valve.

In an optional embodiment, the pressure relief boss has a cavity, and the cavity is respectively communicated with the through hole and the exhaust hole.

In an optional embodiment, the pressure relief boss includes an annular side wall and a bottom wall, the annular side wall is disposed in the patch main body and encloses the through hole, the bottom wall is connected with an end portion of the annular side wall far away from the patch main body, the bottom wall and the annular side wall enclose the cavity, and the exhaust hole is disposed in the annular side wall or the bottom wall.

In an alternative embodiment, the vent hole is opened in the bottom wall, and the center of the vent hole coincides with the center of the bottom wall.

In an alternative embodiment, the pressure relief boss has a height in the range of greater than or equal to 0.2 millimeters; alternatively, the length of the annular sidewall ranges from greater than or equal to 0.2 millimeters; alternatively, the distance between the end face of the bottom wall and the patch main body is greater than or equal to 0.2 mm.

In an optional embodiment, the exhaust hole is formed in the annular side wall, and the height range of the pressure relief boss is greater than or equal to 0.5 mm; alternatively, the length of the annular sidewall ranges from greater than or equal to 0.5 millimeters; alternatively, the distance between the end face of the bottom wall and the patch main body is greater than or equal to 0.5 mm.

In an alternative embodiment, the center of the pressure relief boss coincides with the center of the patch body.

In an alternative embodiment, the pressure relief boss has a diameter in the range of less than or equal to 2 millimeters.

In a second aspect, the present invention provides a secondary battery, comprising a battery main body, an explosion-proof valve and an explosion-proof valve patch as in any one of the above embodiments, wherein the patch main body is attached to the explosion-proof valve.

In a third aspect, the present invention provides an automobile including the secondary battery according to the foregoing embodiment.

The embodiment of the utility model provides an explosion-proof valve protection paster, secondary battery and car: this explosion-proof valve paster is provided with the pressure release boss in the paster main part, and the perforating hole in the paster main part and the exhaust hole intercommunication on the pressure release boss, when the heating appeared in electric core promptly, perforating hole and exhaust hole can make gas along the pressure release boss, follow perforating hole and exhaust to make inside and outside atmospheric pressure keep unanimous basically, in order to avoid the problem of the impaired inefficacy of explosion-proof valve paster because of pressure differential is too big, the air current leads to too urgently etc.. Meanwhile, when the electrolyte is sprayed out from the liquid injection hole, a small amount of electrolyte sometimes falls on the explosion-proof valve patch, and at the moment, the step formed by the pressure relief boss and the patch main body can effectively prevent the electrolyte from entering the inner cavity of the explosion-proof valve. The electrolyte falling on the vent hole individually can be attached to the lug boss under the action of the surface tension of the electrolyte, and cannot enter the inner cavity of the explosion-proof valve along the small hole. Thereby avoiding the electrolyte from immersing into the inner cavity of the explosion-proof valve. The embodiment of the utility model provides an explosion-proof valve paster can effectively block the entering of electrolyte in explosion-proof valve department to can make the inside and outside pressure balance of explosion-proof valve, when avoiding appearing the high temperature and being heated, form air current or inside and outside too big pressure differential rapidly, lead to protection paster structure or function impaired.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of an explosion-proof valve patch provided by an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the explosion-proof valve patch of FIG. 1 at a pressure relief boss;

fig. 3 is a schematic structural view of another pressure relief boss provided in the embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of the explosion-proof valve patch of fig. 3 at a pressure relief boss.

Icon: 100-explosion-proof valve patch; 110-a patch body; 111-through holes; 120-pressure relief boss; 121-exhaust hole; 122-annular side wall; 123-bottom wall.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and 2, an embodiment of the present invention provides an explosion-proof valve patch 100. The explosion-proof valve patch 100 can be applied to an explosion-proof valve of a secondary battery, can effectively prevent electrolyte from entering the explosion-proof valve, can balance the pressure inside and outside the explosion-proof valve, and can avoid the phenomenon that when high temperature is heated, rapid airflow or excessive pressure difference inside and outside is formed, so that the structure or the function of the patch is protected from being damaged.

It should be noted that the embodiment of the present invention provides an explosion-proof valve patch 100, which can be used for an explosion-proof valve of a secondary battery, and the secondary battery can be used in electric equipment such as a new energy automobile, and provide power for the electric equipment such as the new energy automobile. In addition, the secondary battery may be applied to other electric devices.

Optionally, the secondary battery may include a battery main body, a top cap, an explosion-proof valve, a terminal post, and other components, wherein the top cap is disposed on the battery main body, the explosion-proof valve and the terminal post are both disposed on the top cap, and the terminal post is electrically connected to the battery core of the battery main body. The embodiment of the utility model provides an explosion-proof valve paster 100 can laminate on the explosion-proof valve to can balance the inside and outside pressure differential of explosion-proof valve, prevent that electrolyte from soaking the explosion-proof valve.

In the embodiment of the present invention, the explosion-proof valve patch 100 includes a patch main body 110 and a pressure relief boss 120, the pressure relief boss 120 is disposed on the patch main body 110, the patch main body 110 is provided with a through hole 111, the pressure relief boss 120 is provided with an exhaust hole 121, the exhaust hole 121 extends to the through hole 111 and communicates with the through hole 111, and the patch main body 110 is used for being attached to the explosion-proof valve.

It should be noted that, in the embodiment of the present invention, the pressure relief boss 120 is provided on the patch main body 110, the through hole 111 on the patch main body 110 is communicated with the vent hole 121 on the pressure relief boss 120, that is, when the electric core is heated, such as electric core aging, high temperature baking, etc., the gas expands when heated, the through hole 111 and the vent hole 121 can make the gas along the pressure relief boss 120, exhaust from the through hole 111 and the vent hole 121, thereby the internal and external air pressure is kept consistent basically, so as to avoid the problem of damaged failure of the explosion-proof valve patch 100 caused by excessive pressure difference, excessive air flow, etc.

Meanwhile, it should be noted that when the electrolyte is sprayed out from the liquid injection hole, a small amount of electrolyte sometimes falls on the explosion-proof valve patch 100, and at this time, the step formed by the pressure relief boss 120 and the patch main body 110 can effectively prevent the electrolyte from entering the inner cavity of the explosion-proof valve. The electrolyte falling on the vent hole 121 individually adheres to the boss under the surface tension of the electrolyte itself, and does not enter the inner cavity of the explosion-proof valve along the small hole. Thereby avoiding the electrolyte from immersing into the inner cavity of the explosion-proof valve.

The embodiment of the utility model provides an explosion-proof valve paster 100 can effectively block the entering of electrolyte in explosion-proof valve department to can make the inside and outside pressure balance of explosion-proof valve, when avoiding appearing the high temperature and being heated, form air current or inside and outside too big pressure differential rapidly, lead to protection paster structure or function impaired.

In an alternative embodiment, the pressure relief boss 120 has a cavity, and the cavity is respectively communicated with the through hole 111 and the exhaust hole 121. Optionally, the cavity may be enclosed by a pressure relief boss 120.

Alternatively, in the embodiment of the present invention, the explosion-proof valve patch 100 may be a PET flat film, and the pressure relief boss 120 may be formed on the flat film by stretching, and at the same time, the through hole 111 is formed; an exhaust hole 121 is formed in the pressure relief boss 120. At this time, the cavity is formed by stretching the planar film. Of course, the present invention is not limited thereto, and the explosion-proof valve patch 100 may be manufactured in other manners in other embodiments of the present invention, and the present invention is not limited to the specific manufacturing manner.

Further, the pressure relief boss 120 includes an annular sidewall 122 and a bottom wall 123, the annular sidewall 122 is disposed on the chip main body 110 and surrounds the through hole 111, the bottom wall 123 is connected to the end portion of the annular sidewall 122 away from the chip main body 110, the bottom wall 123 and the annular sidewall 122 surround to form a cavity, and the vent hole 121 is opened in the annular sidewall 122 or the bottom wall 123.

As shown in fig. 1 and 2, the exhaust hole 121 is provided in the bottom wall 123; as shown in fig. 3 and 4, the exhaust hole 121 is provided in the sidewall.

With continued reference to fig. 2, in an alternative embodiment, the vent hole 121 is opened in the bottom wall 123, and the center of the vent hole 121 coincides with the center of the bottom wall 123.

Alternatively, the vent hole 121 may be circular and the pressure relief boss 120 may be a generally cylindrical boss.

In the embodiment where the vent 121 is formed in the bottom wall 123, the height of the pressure relief boss 120 is greater than or equal to 0.2 mm; alternatively, the length of the annular sidewall 122 ranges from greater than or equal to 0.2 millimeters; alternatively, the distance between the end surface of the bottom wall 123 and the patch body 110 may be in a range of 0.2 mm or more.

In addition, please refer to fig. 3 and 4, in the embodiment where the exhaust hole 121 is formed in the annular sidewall 122, the height range of the pressure relief boss 120 is greater than or equal to 0.5 mm; alternatively, the length of the annular sidewall 122 ranges from greater than or equal to 0.5 millimeters; alternatively, the distance between the end surface of the bottom wall 123 and the patch body 110 may be in a range of 0.5 mm or more.

The above-mentioned high requirement to pressure release boss 120 is favorable to guaranteeing the utility model discloses the anti electrolyte requirement of explosion-proof valve paster 100 that the embodiment provided.

Optionally, the center of the pressure relief boss 120 coincides with the center of the patch body 110, so that the attachment of the explosion-proof valve patch 100 to the explosion-proof valve is more stable, thereby facilitating the prevention of the failure of the explosion-proof valve patch 100.

Optionally, the pressure relief boss 120 has a diameter in a range of less than or equal to 2 millimeters.

Furthermore, the present invention provides a secondary battery comprising a battery main body, an explosion-proof valve and an explosion-proof valve patch 100 as in any one of the above embodiments, wherein the patch main body 110 is attached to the explosion-proof valve.

Further, the present invention provides an automobile including the secondary battery as in the foregoing embodiments, including but not limited to a new energy automobile and the like.

Referring to fig. 1 to fig. 4, an embodiment of the present invention provides an explosion-proof valve protection patch, a secondary battery, and an automobile: this explosion-proof valve paster 100 is provided with pressure release boss 120 on paster main part 110, and perforating hole 111 on paster main part 110 and the exhaust hole 121 on the pressure release boss 120 intercommunication, and when the electric core appeared heating promptly, perforating hole 111 and exhaust hole 121 can make gas along pressure release boss 120, follow perforating hole 111 and exhaust hole 121 and exhaust to make inside and outside atmospheric pressure keep unanimous basically, in order to avoid the problem of the damaged inefficacy of explosion-proof valve paster 100 that leads to because of pressure differential is too big, the air current is too urgent etc.. Meanwhile, when the electrolyte is sprayed out from the liquid injection hole, a small amount of electrolyte sometimes falls on the explosion-proof valve patch 100, and at this time, the step formed by the pressure relief boss 120 and the patch main body 110 can effectively prevent the electrolyte from entering the inner cavity of the explosion-proof valve. The electrolyte falling on the vent hole 121 individually adheres to the boss under the surface tension of the electrolyte itself, and does not enter the inner cavity of the explosion-proof valve along the small hole. Thereby avoiding the electrolyte from immersing into the inner cavity of the explosion-proof valve. The embodiment of the utility model provides an explosion-proof valve paster 100 can effectively block the entering of electrolyte in explosion-proof valve department to can make the inside and outside pressure balance of explosion-proof valve, when avoiding appearing the high temperature and being heated, form air current or inside and outside too big pressure differential rapidly, lead to protection paster structure or function impaired.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an explosion-proof valve paster for the laminating is on secondary cell's explosion-proof valve, its characterized in that, explosion-proof valve paster (100) are including paster main part (110) and pressure release boss (120), pressure release boss (120) set up in on paster main part (110), be provided with perforating hole (111) on paster main part (110), be provided with exhaust hole (121) on pressure release boss (120), exhaust hole (121) extend to perforating hole (111), and with perforating hole (111) intercommunication, paster main part (110) are used for the laminating on the explosion-proof valve.

2. The explosion proof valve patch as claimed in claim 1, wherein the pressure relief boss (120) has a cavity communicating with the through hole (111) and the vent hole (121), respectively.

3. The explosion-proof valve patch according to claim 2, wherein the pressure relief boss (120) comprises an annular side wall (122) and a bottom wall (123), the annular side wall (122) is disposed on the patch main body (110) and encloses the through hole (111), the bottom wall (123) is connected with an end portion of the annular side wall (122) far away from the patch main body (110), the bottom wall (123) and the annular side wall (122) enclose the cavity, and the vent hole (121) is opened in the annular side wall (122) or the bottom wall (123).

4. An anti-explosion valve patch as claimed in claim 3, wherein the vent (121) opens in the bottom wall (123) and the centre of the vent (121) coincides with the centre of the bottom wall (123).

5. The explosion vent patch as recited in claim 4, wherein the pressure relief boss (120) has a height ranging from greater than or equal to 0.2 mm; alternatively, the length of the annular sidewall (122) ranges from greater than or equal to 0.2 millimeters; alternatively, the distance between the end surface of the bottom wall (123) and the patch main body (110) is in a range of 0.2 mm or more.

6. The explosion vent patch as recited in claim 3, wherein the vent hole (121) opens into the annular sidewall (122), and the pressure relief boss (120) has a height in the range of 0.5 mm or greater; alternatively, the length of the annular sidewall (122) ranges from greater than or equal to 0.5 millimeters; alternatively, the distance between the end surface of the bottom wall (123) and the patch main body (110) is in a range of 0.5 mm or more.

7. An explosion vent patch as recited in claim 1, wherein the center of the pressure relief boss (120) coincides with the center of the patch body (110).

8. The explosion proof valve patch as recited in claim 1 wherein the pressure relief boss (120) has a diameter in the range of less than or equal to 2 millimeters.

9. A secondary battery comprising a battery body, an explosion-proof valve, and the explosion-proof valve patch (100) according to any one of claims 1 to 8, wherein the patch body (110) is attached to the explosion-proof valve.

10. An automobile characterized by comprising the secondary battery according to claim 9.