CN211150608U

CN211150608U - Alkali-manganese cell sealing ring

Info

Publication number: CN211150608U
Application number: CN201922353890.5U
Authority: CN
Inventors: 陈水标; 何辨良; 祝凌
Original assignee: Zhengjiang Mustang Battery Co ltd
Current assignee: Zhengjiang Mustang Battery Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-07-31
Anticipated expiration: 2029-12-24

Abstract

A sealing ring of an alkaline manganese battery comprises a metal shell, a negative bottom cover, a buffer ring, a sealing ring, a negative current collector and a current collector fixing block, wherein a bent part extending inwards is arranged at the contact position of the negative bottom cover of the metal shell; the buffer ring comprises a convex part and a second connecting part, the outer surface of the convex part is abutted to the first connecting part and is positioned below the second concave part, and the second connecting part is fixedly connected with the convex part and one end of the second connecting part extends into the current collector fixing block.

Description

Alkali-manganese cell sealing ring

Technical Field

The utility model relates to an alkali-manganese cell field especially relates to an alkali-manganese cell sealing washer.

Background

In order to prevent leakage of the battery, a sealing ring is usually provided between the end cap and the battery case. During the use of the battery, gas is generated in the battery due to the overhigh temperature or over-discharge of the battery, so that the internal pressure is increased, and the battery is deformed or even exploded. Therefore, an explosion-proof structure is usually additionally arranged in the battery for the use safety of the battery. But the effective volume of battery can be influenced to the sealing washer and the explosion-proof structure of addding, leads to battery storage capacity to reduce, consequently the utility model provides a can realize the sealing washer of explosion-proof and avoid the weeping, reduce simultaneously and occupy the battery inner space.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an alkali-manganese cell sealing washer 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:

a seal ring of an alkaline manganese battery comprises a metal shell, a negative bottom cover, a buffer ring, a seal ring, a negative current collector and a current collector fixing block, the metal shell is provided with a bending part extending inwards at the contact part of the negative electrode bottom cover, the edge part of the negative electrode bottom cover is matched with the bending part and is connected with the inner surface of the metal shell in a sealing way, the seal ring includes a first recess, a second recess, and a first connection portion connecting the first recess and the second recess, the first concave part is arranged between the inner surface of the metal shell and the edge part of the negative electrode bottom cover and is abutted with the inner surface of the metal shell and the edge part of the negative electrode bottom cover, the outer surface of the second concave part is in contact with the inner surface of the negative electrode bottom cover, the first connecting part connects the first concave part and the second concave part, and one end of the first connecting part extends into the current collector fixing block; the buffer ring comprises a convex part and a second connecting part, the outer surface of the convex part is in contact with the first connecting part and is located below the second concave part, and the second connecting part is fixedly connected with the convex part and one end of the second connecting part extends into the current collector fixing block.

In one embodiment, the buffer ring is attached to the metal shell and provided with a groove which is bent inwards to form an arc shape by the metal shell.

In one embodiment, one end of the buffer ring is provided with a fixing groove matched with the groove.

In one embodiment, the negative electrode bottom cover is provided with a vent hole, and the vent hole is located above the second concave part.

In one embodiment, the minimum inner diameter of the vent hole is 0.4 to 1mm, and the maximum inner diameter is 1.3 to 1.7 mm.

In one embodiment, the vent hole is of a wide-mouthed design.

The utility model has the advantages that: on one hand, when gas is generated in the battery, the gas can press the buffer ring and enable the buffer ring to abut against the concave part on the sealing ring, at the moment, the buffer ring is deformed to abut against the gas pressing, then the sealing ring is deformed to abut against the gas pressing for the second time, wherein the air in the first concave part can be discharged outwards through the vent hole, and further the pressure borne by the sealing ring is effectively relieved; on the other hand, the bent part is fully contacted with the edge part of the negative electrode bottom cover, and further the first concave part is arranged between the inner surface of the metal shell and the edge part of the negative electrode bottom cover and is abutted against the inner surface of the metal shell and the edge part of the negative electrode bottom cover, so that the possibility of leakage of the battery is avoided, the sealing ring realizes the double functions of explosion prevention and leakage prevention, the occupied internal space of the battery is reduced, and the electric quantity of the battery is effectively ensured; the air vent adopts wide-mouthed formula design, avoids the accumulational condition of dust to take place.

Drawings

Fig. 1 is a schematic sectional view of the present invention.

In the figure: 10. the negative electrode current collector comprises a metal shell, 11, a groove, 20, a negative electrode bottom cover, 21, a vent hole, 30, a buffer ring, 31, a convex part, 32, a second connecting part, 33, a fixing groove, 40, a sealing ring, 41, a first concave part, 42, a second concave part, 43, a first connecting part, 50, a negative electrode current collector, 60, a current collector fixing block, 70 and a bending part.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. In the following description, feature details such as specific configurations and components are provided only to help a full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

The utility model provides an alkali-manganese cell sealing ring.

As shown in fig. 1, an alkali-manganese battery sealing ring comprises a metal casing 10, a negative electrode bottom cover 20, a buffer ring 30, a sealing ring 40, a negative electrode current collector 50 and a current collector fixing block 60, wherein the metal casing 10 is provided with a bent portion 70 extending inwards at a contact position of the negative electrode bottom cover 20, an edge portion of the negative electrode bottom cover 20 is matched with the bent portion 70 and is connected with an inner surface of the metal casing 10 in a sealing manner, specifically, an edge portion of the negative electrode bottom cover 20 is matched with the bent portion 70 and is connected with an inner surface of the bent portion 70 in an attaching manner in a sealing manner, further, the sealing ring 40 comprises a first concave portion 41, a second concave portion 42 and a first connecting portion 43 connecting the first concave portion 41 and the second concave portion 42, the first concave portion 41 is arranged between the inner surface of the metal casing 10 and the edge portion of the negative electrode bottom cover 20 and is abutted against the inner surface of the metal, the outer surface of the second concave part 42 is in contact with the inner surface of the negative electrode bottom cap 20, the first connecting part 43 connects the first concave part 41 and the second concave part 42, and one end of the first connecting part extends into the current collector fixing block 60; the buffer ring 30 includes a convex portion 31 and a second connecting portion 32, the outer surface of the convex portion 31 is abutted to the first connecting portion 43 and is located below the second concave portion 42, and the second connecting portion 32 is fixedly connected to the convex portion 31 and one end of the second connecting portion extends into the current collector fixing block 60.

When the double-pressure-relief explosion-proof battery is used, the double-pressure-relief explosion-proof purpose is achieved through the second concave part 42 and the buffer ring 30, on one hand, when gas is generated in the battery, the gas can press the buffer ring 30 and enable the buffer ring to abut against the concave part on the sealing ring, at the moment, the buffer ring 30 is deformed to resist the gas pressing, then the sealing ring 40 is deformed to resist the gas pressing for the second time, and further the pressure borne by the sealing ring 40 is effectively relieved; on the other hand, the bent portion 70 is in full contact with the edge portion of the negative electrode bottom cover 20, and further the first concave portion 41 is disposed between the inner surface of the metal shell 10 and the edge portion of the negative electrode bottom cover 20 and is in contact with the inner surface of the metal shell 10 and the edge portion of the negative electrode bottom cover 20, so that the possibility of leakage of the battery is avoided, the sealing ring 40 achieves the dual functions of explosion prevention and leakage prevention, meanwhile, the occupied internal space of the battery is reduced, and the electric quantity of the battery is effectively guaranteed.

Further, the buffer ring 30 is attached to the metal shell 10 to form a groove 11, the metal shell 10 is bent inward to form an arc shape, and a fixing groove 33 matched with the groove 11 is formed in one end of the buffer ring 30, so that the buffer ring 30 is better attached to the metal shell 10 and fixed through the matching of the groove 11 and the fixing groove 33.

Furthermore, the negative electrode bottom cover 20 is provided with a vent hole 21, and the vent hole 21 is located above the second concave portion 42, so that when the sealing ring 40 deforms to resist the pressure of gas, the second concave portion 42 on the sealing ring 40 deforms to discharge the gas in the second concave portion 42 through the vent hole, and further the pressure reduction effect is achieved.

The minimum inner diameter of the vent hole 21 is 0.4-1mm, and the maximum inner diameter is 1.3-1.7mm, so that external dust can be effectively prevented from entering the second concave part 42.

Furthermore, the vent holes 21 are of a wide-mouthed design.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides an alkaline manganese cell sealing washer, includes metal casing (10), negative pole bottom cap (20), buffer ring (30), sealing washer (40), the mass flow body of negative pole (50) and mass flow body fixed block (60), its characterized in that: the metal shell (10) is provided with a bent part (70) extending inwards at the contact position of the negative electrode bottom cover (20), the edge part of the negative electrode bottom cover (20) is matched with the bent part (70) and is connected with the inner surface of the metal shell (10) in a sealing mode, the sealing ring (40) comprises a first concave part (41), a second concave part (42) and a first connecting part (43) which is used for connecting the first concave part (41) with the second concave part (42), the first concave part (41) is arranged between the inner surface of the metal shell (10) and the edge part of the negative electrode bottom cover (20) and is abutted against the inner surface of the metal shell (10) and the edge part of the negative electrode bottom cover (20), the outer surface of the second concave part (42) is in contact with the inner surface of the negative electrode bottom cover (20), and the first connecting part (43) is used for connecting the first concave part (41) with the second concave part (42) and one end of the current collector extends into the fixing; buffer ring (30) include convex part (31) and second connecting portion (32), convex part (31) surface with first connecting portion (43) are inconsistent and are located second concave part (42) below, second connecting portion (32) with convex part (31) fixed connection and one end extend into current collector fixed block (60) inside.

2. The seal ring for alkaline manganese dioxide cell as claimed in claim 1, wherein: the buffer ring (30) is attached to the metal shell (10) to form an arc-shaped groove (11) formed by inwards bending the metal shell (10).

3. The seal ring for alkaline manganese dioxide cell as claimed in claim 2, wherein: one end of the buffer ring (30) is provided with a fixing groove (33) matched with the groove (11).

4. The seal ring for alkaline manganese dioxide cell as claimed in claim 3, wherein: the negative electrode bottom cover (20) is provided with a vent hole (21), and the vent hole (21) is positioned above the second concave part (42).

5. The seal ring for alkaline manganese dioxide cell as claimed in claim 4, wherein: the minimum inner diameter of the vent hole (21) is 0.4-1mm, and the maximum inner diameter is 1.3-1.7 mm.

6. The seal ring for alkaline manganese dioxide cell as claimed in claim 5, wherein: the vent hole (21) adopts a wide-mouthed design.