CN213636132U

CN213636132U - Alkali-manganese cell sealing ring

Info

Publication number: CN213636132U
Application number: CN202022673077.9U
Authority: CN
Inventors: 王世杰; 孙刚; 徐梓恒
Original assignee: Zhengjiang Mustang Battery Co ltd
Current assignee: Zhengjiang Mustang Battery Co ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-07-06
Anticipated expiration: 2030-11-18

Abstract

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 first bending part at the contact position of the negative electrode bottom cover, the negative electrode bottom cover is provided with a second bending part at the contact position of the metal shell, the first bending part and the second bending part are matched to enable the metal shell to be connected with the negative electrode bottom cover in a sealing mode, the sealing ring comprises a third bending part, a supporting convex ring and a connecting part, the third bending part is connected with the connecting part of the supporting convex ring, the third bending part is arranged between the metal shell and the negative electrode bottom cover and is abutted to the inner surface of the metal shell and the edge part of the negative electrode bottom cover, the outer wall of the top of the supporting convex ring is in contact with the inner surface of the negative electrode bottom cover, the connecting part connects the third bending part with the supporting convex ring, one end.

Description

Alkali-manganese cell sealing ring

Technical Field

The utility model relates to the technical field of batteries, especially, relate 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 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:

an alkali-manganese battery sealing ring 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 the metal shell is provided with a first bending part at the contact part of the negative bottom cover, the negative bottom cover is provided with a second bending part at the contact part of the metal shell, the first bending part is matched with the second bending part to enable the metal shell to be in sealing connection with the negative bottom cover, the sealing ring comprises a third bending part, a supporting convex ring and a connecting part for connecting the third bending part with the supporting convex ring, the third bending part is arranged between the metal shell and the negative bottom cover and is abutted against the inner surface of the metal shell and the edge part of the negative bottom cover, the outer wall of the top part of the supporting convex ring is in contact with the inner surface of the negative bottom cover, the connecting part connects the third bending part with the supporting convex ring, and one end of the connecting, the buffer ring with the sealing washer is inconsistent and one end extends to inside the mass flow body fixed block.

In one embodiment, an arc-shaped groove formed by bending the metal shell inwards is formed at the contact position of one end of the buffer ring and the metal shell.

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

In one embodiment, a cavity is formed in the support collar.

In one embodiment, a through hole communicated with the cavity is formed below the supporting convex ring and on the connecting part.

In one embodiment, the through-hole has a minimum inner diameter of 0.4 to 1.5mm and a maximum inner diameter of 1.5 to 2.5 mm.

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

1. the utility model achieves the explosion-proof effect through the sealing ring comprising a third bending part, a supporting convex ring and a connecting part connecting the third bending part and the supporting convex ring, on one hand, a cavity is arranged in the supporting convex ring, thereby when the inner part of the battery is exploded, the buffer is carried out by the cavity in the supporting convex ring, on the other hand, the through hole communicated with the cavity is arranged on the connecting part below the supporting convex ring, so that when the inner part of the battery is exploded, the connecting part is extruded into the supporting convex ring to deform the supporting convex ring, the air pressure in the supporting convex ring is discharged out of the through hole on the connecting part through the extrusion of the connecting block, and then explosion atmospheric pressure offsets with the atmospheric pressure in the support convex ring and reduces the buffering, offsets through buffering circle and sealing washer simultaneously to prevent that the atmospheric pressure on the sealing washer from flowing toward the battery is inside scurried.

Drawings

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

Fig. 2 is a schematic structural view of the sealing ring and the buffering ring of the present invention.

In the figure: 1. metal casing, 2, negative electrode bottom, 3, buffer ring, 40, sealing washer, 5, the negative current collector, 6, the current collector fixed block, 11, third kink, 12, support bulge loop, 13, connecting portion, 14, recess, 15, cavity, 16, through-hole.

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. 1-2, an alkali-manganese cell sealing ring comprises a metal shell 1, a negative electrode bottom cover 2, a buffer ring 3, a sealing ring 4, a negative electrode current collector 5 and a current collector fixing block 6, wherein the metal shell 1 is provided with a first bending portion at a contact position of the negative electrode bottom cover 2, the negative electrode bottom cover 2 is provided with a second bending portion at a contact position of the metal shell 1, and the first bending portion and the second bending portion are matched to enable the metal shell 1 and the negative electrode bottom cover 2 to be hermetically connected, specifically, as shown in the figure, an edge portion of the second bending portion abuts against the bending portion of the first bending portion, so that the metal shell 1 and the negative electrode bottom cover 2 are now hermetically connected.

Further, the sealing ring 4 includes a third bending portion 11, a supporting convex ring 12, and a connecting portion 13 connecting the third bending portion 11 and the supporting convex ring 12, where the third bending portion 11 is disposed between the metal casing 1 and the negative electrode bottom cover 2 and abuts against the inner surface of the metal casing 1 and the edge portion of the negative electrode bottom cover 2, the outer wall of the top of the supporting convex ring 12 contacts the inner surface of the negative electrode bottom cover 2, and the connecting portion 13 connects the third bending portion 11 and the supporting convex ring 12 and has one end extending into the current collector fixing block 6; wherein, a cavity 15 is arranged in the supporting convex ring 12; a through hole 16 communicated with the cavity 15 is formed below the supporting convex ring 12 and on the connecting part 13; thereby when the circumstances such as the inside explosion that takes place of battery, cushion through supporting inside cavity 15 of bulge loop 12 to prevent that the battery from warping even blasting, on the other hand, support bulge loop 12 below, seted up the intercommunication on connecting portion 13 the through-hole 16 of cavity 15 to when the inside circumstances such as explosion that takes place of battery, connecting portion 13 extrudees in supporting bulge loop 12, makes and supports bulge loop 12 and warp, and the atmospheric pressure in supporting bulge loop 12 discharges outward through connecting portion 13's extrusion toward connecting portion 13 last through-hole 16, and then the atmospheric pressure of explosion offsets with the atmospheric pressure in supporting bulge loop 12 and reduces the buffering, thereby prevents that the atmospheric pressure on the sealing washer from flowing toward the battery is inside and scurried.

Further, the buffer ring 3 with the sealing washer 4 is inconsistent and one end extends to inside the mass flow body fixed block 6 to make the buffer ring 3 can be fixed in the battery, thereby playing a role of buffering.

Furthermore, an arc-shaped groove 14 formed by bending the metal shell 1 inwards is formed at the contact position of one end of the buffer ring 3 and the metal shell 1; buffer ring 3 one end be provided with recess 14 assorted spill breach to buffer ring 3 extends to the current collector fixed block 6 inside through one end, the other end and metal casing 1 on recess 14 phase-match and fixed, thereby must buffer ring 3 can fix in the battery, and then play the cushioning effect.

In addition, the minimum inner diameter of the through hole 16 is 0.4 to 1.5mm, and the maximum inner diameter is 1.5 to 2.5 mm.

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 alkali-manganese cell sealing washer, includes metal casing (1), negative pole bottom (2), buffering circle (3), sealing washer (4), the mass flow body of negative pole (5) and mass flow body fixed block (6), its characterized in that: the metal shell (1) is provided with a first bent part at the contact part of the negative electrode bottom cover (2), the negative electrode bottom cover (2) is provided with a second bent part at the contact part of the metal shell (1), the first bent part and the second bent part are matched to enable the metal shell (1) to be in sealing connection with the negative electrode bottom cover (2), the sealing ring (4) comprises a third bent part (11), a supporting convex ring (12) and a connecting part (13) for connecting the third bent part (11) and the supporting convex ring (12), the third bent part (11) is arranged between the metal shell (1) and the negative electrode bottom cover (2) and is abutted against the inner surface of the metal shell (1) and the edge part of the negative electrode bottom cover (2), the outer wall of the top part of the supporting convex ring (12) is in contact with the inner surface of the negative electrode bottom cover (2), connecting portion (13) will third kink (11) with support bulge loop (12) connection and one end extend to inside mass flow body fixed block (6), buffer ring (3) with sealing washer (4) are inconsistent and one end extends to inside mass flow body fixed block (6).

2. The seal ring for alkaline manganese dioxide cell as claimed in claim 1, wherein: an arc-shaped groove (14) formed by inwards bending the metal shell (1) is formed at the contact part of one end of the buffer ring (3) and the metal shell (1).

3. The seal ring for alkaline manganese dioxide cell as claimed in claim 2, wherein: one end of the buffer ring (3) is provided with a concave notch matched with the groove (14).

4. The seal ring for alkaline manganese dioxide cell as claimed in claim 1, wherein: a cavity (15) is arranged in the supporting convex ring (12).

5. The seal ring for alkaline manganese dioxide cell as claimed in claim 4, wherein: and a through hole (16) communicated with the cavity (15) is formed below the supporting convex ring (12) and on the connecting part (13).

6. The seal ring for alkaline manganese dioxide cell as claimed in claim 5, wherein: the minimum inner diameter of the through hole (16) is 0.4-1.5mm, and the maximum inner diameter is 1.5-2.5 mm.