CN210956846U

CN210956846U - Explosion-proof zinc-manganese dry cell

Info

Publication number: CN210956846U
Application number: CN201922059632.6U
Authority: CN
Inventors: 王东兴
Original assignee: Ningbo Fengyin Battery Co ltd
Current assignee: Ningbo Fengyin Battery Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-07-07
Anticipated expiration: 2029-11-26

Abstract

The utility model discloses an explosion-proof zinc-manganese dry battery, which comprises a zinc cylinder, an electric core and a carbon rod which are arranged inside the zinc cylinder, and an inner plug which is sleeved on the periphery of the carbon rod and the outer edge of which is propped against the inner side wall of the zinc cylinder; the middle part of the inner plug is provided with a middle hole for penetrating through the carbon rod, the position of the inner plug adjacent to the middle hole is longitudinally penetrated and provided with at least one through hole, the position of the lower end surface of the inner plug adjacent to the middle hole is also provided with grooves with the same number as the inner plug, the opening direction of the grooves faces to the middle hole, and the lower side opening of the through hole is positioned in the groove; and sealing glue is coated between the inner plug and the carbon rod and between the inner plug and the zinc barrel, and the sealing glue positioned between the inner plug and the carbon rod extends into the groove and seals the lower end opening of the through hole. In the technical scheme, the through hole is formed, so that the inner plug can realize an explosion-proof effect, and the lower end opening of the through hole can be sealed while the carbon rod and the inner plug are sealed during gluing, so that the operation of sealing the through hole is easy to realize.

Description

Explosion-proof zinc-manganese dry cell

Technical Field

The utility model relates to a zinc-manganese dry battery technical field especially relates to an explosion-proof zinc-manganese dry battery.

Background

The common zinc-manganese dry battery is divided into two types of batteries according to the materials of external trademarks, one type of battery is a PVC battery, and the other type of battery is an iron-clad battery. The sealing ring can be arranged outside the iron-clad battery, and an outer plug structure is manufactured, so that the effective space is fully utilized, and meanwhile, an explosion-proof effect can be achieved. The sealing ring of the PVC battery is arranged in the zinc cylinder at present and is made into an inner plug structure, so that the preparation difficulty of the inner plug with the explosion-proof function is higher. Therefore, a technology for opening the inner plug of the through hole has been developed, which can realize an explosion-proof function, but since the hole is provided on the bottom plane of the inner plug, it is difficult to apply a sealing agent to the through hole.

SUMMERY OF THE UTILITY MODEL

In view of the above problems in the prior art, there is provided an explosion-proof zinc-manganese dry battery which is intended to facilitate the operation of sealing a through hole, so as to overcome the above technical drawbacks.

The specific technical scheme is as follows:

an explosion-proof zinc-manganese dry battery comprises a zinc cylinder, an electric core and a carbon rod which are arranged in the zinc cylinder, and an inner plug which is sleeved on the periphery of the carbon rod and the outer edge of which is propped against the inner side wall of the zinc cylinder;

the middle part of the inner plug is provided with a middle hole for penetrating through the carbon rod, the position of the inner plug adjacent to the middle hole is longitudinally penetrated and provided with at least one through hole, the position of the lower end surface of the inner plug adjacent to the middle hole is also provided with grooves with the same number as the through holes, the opening direction of each groove faces to the middle hole, and the lower side opening of each through hole is respectively positioned in one corresponding groove;

and sealing glue is coated between the inner plug and the carbon rod and between the inner plug and the zinc barrel, and the sealing glue positioned between the inner plug and the carbon rod extends into the groove and seals the lower end opening of the through hole.

Preferably, on the lower end face of the inner plug, a round chamfer is arranged at the edge position of the middle hole, and the groove is arranged on the cambered surface of the round chamfer.

Preferably, the whole groove is of a spherical groove structure.

Preferably, the upper end face of the inner plug is also provided with square grooves which are equal in number and opposite to the straight through holes.

Preferably, the number of the through holes, the number of the grooves and the number of the square grooves are all one.

The beneficial effects of the above technical scheme are that:

the explosion-proof zinc-manganese dry battery comprises a zinc cylinder, an electric core, a carbon rod and an inner plug, wherein a middle hole, a through hole and a groove are formed in the inner plug in a penetrating mode, the through hole is formed so that the inner plug can achieve an explosion-proof effect, the groove is connected with an opening at the lower end of the through hole and faces the middle hole, sealing of the opening at the lower end of the through hole can be achieved while sealing between the carbon rod and the inner plug is achieved during gluing, and therefore operation of sealing the through hole is easy to achieve.

Drawings

FIG. 1 is a sectional view of an explosion-proof zinc-manganese dioxide dry battery of the utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is a sectional view of the inner plug of the anti-explosion zinc-manganese dry battery.

Detailed Description

In order to make the technical means, creation features, achievement purposes and effects of the present invention easy to understand, the following embodiments are specifically illustrated in conjunction with the accompanying drawings. The up-down-left-right direction as shown in fig. 1 is defined as the up-down-left-right direction in the present embodiment.

Referring to fig. 1 to 3, the explosion-proof zinc-manganese dry battery provided in this embodiment includes a zinc cylinder 1, a battery core 3 and a carbon rod 2 disposed inside the zinc cylinder 1, and an inner plug 4 sleeved on the periphery of the carbon rod 2 and having an outer edge abutting against the inner sidewall of the zinc cylinder 1; the middle part of the inner plug 4 is provided with a middle hole 7 for penetrating the carbon rod 2, the position of the inner plug 4 adjacent to the middle hole 7 is longitudinally penetrated and provided with at least one through hole 6 for playing an explosion-proof role, the position of the lower end face of the inner plug 4 adjacent to the middle hole 7 is also provided with grooves 9 with the same number as the through holes 6, the opening direction of each groove 9 faces the middle hole 7, and the lower side opening of each through hole 6 is respectively positioned in the corresponding groove 9; and sealant 5 is coated between the inner plug 4 and the carbon rod 2 and between the inner plug 4 and the zinc cylinder 1, and the sealant 5 positioned between the inner plug 4 and the carbon rod 2 extends into the groove 9 and seals the lower end opening of the through hole 6.

Based on the technical scheme, the explosion-proof zinc-manganese dry battery comprises a zinc cylinder 1, an electric core 3, a carbon rod 2 and an inner plug 4, wherein a middle hole 7, a through hole 6 and a groove 9 are formed in the inner plug 4 in a penetrating mode, the through hole 6 is formed so that the inner plug 4 can achieve an explosion-proof effect, the groove 9 is connected with the lower end opening of the through hole 6 and faces the middle hole 7, sealing of the lower end opening of the through hole 6 can be achieved when sealing is achieved between the carbon rod 2 and the inner plug 4 during gluing, and therefore operation of sealing the through hole 6 is easy to achieve.

In a preferred embodiment, a round chamfer 8 is arranged at the edge position of the middle hole 7 on the lower end surface of the inner plug 4, and the groove 9 is formed on the arc surface of the round chamfer 8, so that the sealant 5 can enter the groove 9 and close the through hole 6 when the glue is applied between the carbon rod 2 and the inner plug 4. Further, the groove 9 is a spherical groove structure as a whole, but is not limited thereto. Furthermore, the upper end face of the inner plug 4 is also provided with square grooves 10 which are equal in number and opposite in position to the straight through holes 6, so that the explosion-proof effect is enhanced. Further, the number of the through holes 6, the grooves 9, and the square grooves 10 is one, but not limited thereto.

Specifically, after the inner plug 4 with the through hole 6 is subjected to injection molding through a mold, the lower end face of the inner plug 4 is mainly a round chamfer 8 and a groove 9 below the middle hole 7, and the lower end face of the inner plug 4 is abutted to the position of the zinc cylinder 1 (specifically referring to fig. 2) to be coated with the sealant 5, and meanwhile, the gluing and sealing operation for the through hole 6 is completed in the operation, so that the inner plug 4 is arranged in the zinc cylinder 1 and sleeved outside the carbon rod 2, the operation is simple and convenient, and the operation is in place in one step. It is worth pointing out that the upper end face of the inner plug is also provided with a column-shaped protrusion at the position adjacent to the periphery of the central hole 7, the square groove is opened in the column-shaped protrusion, and the through hole is opposite to the side opening of the positive electrode cap. Through the scheme, the battery is effectively sealed; when the battery is misused, the generated internal pressure can break the sealant at the through hole and release the sealant through the hole on the side surface of the positive electrode cap, thereby achieving the purpose of explosion prevention.

The foregoing is only a preferred embodiment of the present invention, which is illustrative, not limiting. Those skilled in the art will appreciate that many variations, modifications, and equivalents may be made thereto without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An explosion-proof zinc-manganese dry battery is characterized by comprising a zinc cylinder (1), an electric core (3) and a carbon rod (2) which are arranged in the zinc cylinder (1), and an inner plug (4) which is sleeved on the periphery of the carbon rod (2) and the outer edge of which is propped against the inner side wall of the zinc cylinder (1);

the middle part of the inner plug (4) is provided with a middle hole (7) for penetrating through the carbon rod (2), the position of the inner plug (4) adjacent to the middle hole (7) is longitudinally provided with at least one through hole (6) in a penetrating way, the position of the lower end face of the inner plug (4) adjacent to the middle hole (7) is also provided with grooves (9) with the same number as the through holes (6), the opening direction of each groove (9) faces to the middle hole (7), and the lower side opening of each through hole (6) is respectively positioned in one corresponding groove (9);

and sealing glue (5) is coated between the inner plug (4) and the carbon rod (2) and between the inner plug (4) and the zinc cylinder (1), and the sealing glue (5) positioned between the inner plug (4) and the carbon rod (2) extends into the groove (9) and seals the lower end opening of the through hole (6).

2. The explosion-proof zinc-manganese dioxide dry battery as claimed in claim 1, characterized in that on the lower end face of said inner plug (4), the edge position of said central hole (7) has a rounded chamfer (8), and said groove (9) opens on the arc face of said rounded chamfer (8).

3. The explosion-proof zinc-manganese dioxide dry battery as claimed in claim 2, wherein said groove (9) is of a spherical groove structure as a whole.

4. The explosion-proof zinc-manganese dioxide dry battery of claim 3, characterized in that the upper end face of the inner plug (4) is also provided with square grooves (10) which are equal in number and opposite in position to the through holes (6).

5. The explosion-proof zinc-manganese dioxide dry battery of claim 4, characterized in that the number of said through holes (6), said grooves (9) and said square grooves (10) is one.