Leakage-proof battery

Abstract

A leakage-proof battery comprises a battery body with a zinc cylinder and is characterized by further comprising a PVC pipe, an outer sleeve and an iron bottom, the PVC pipe is connected to the outer side of the zinc cylinder in a sleeved mode, structural adhesives which are arranged in the circumferential direction and connected with the PVC pipe are arranged at the positions, close to the positive electrode end and the negative electrode end of the battery body, of the peripheral wall of the zinc cylinder respectively, and the structural adhesives are connected with the outer sleeve. The positions, close to the positive electrode end and the negative electrode end of the battery body, of the PVC pipe are both subjected to thermal shrinkage treatment after being connected with the structural adhesive, the PVC pipe is sleeved with the outer sleeve shell, the iron bottom abuts against the negative electrode end of the battery body, and the position, close to the negative electrode end of the battery body, of the outer sleeve shell is connected with the peripheral side of the iron bottom through thermal shrinkage treatment. And a gap is reserved between the iron bottom and the PVC pipe. According to the scheme, the outer side wall of the zinc cylinder is blocked through the PVC pipe, the liquid leakage problem is effectively avoided, the PVC pipe is subjected to thermal shrinkage treatment after connection between the PVC pipe and the zinc cylinder is achieved through the structural adhesive, and the connection tightness between the PVC pipe and the zinc cylinder is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dry batteries, in particular to a leak-proof battery. Background Art

[0002] A dry cell is a chemical battery that uses an electrolyte to generate direct current. A dry cell is a primary battery and is the most commonly used battery in daily life.

[0003] Common dry batteries are carbon zinc-manganese dry batteries, and their main structure generally includes a zinc cylinder and a battery body filled with electrolyte inside the zinc cylinder. During the use of dry batteries, once excessive discharge or severe discharge occurs, the zinc cylinder is prone to be punctured and punctured. At this time, the electrolyte in the battery body will leak out from the damaged position of the zinc cylinder, causing safety hazards. Utility Model Content

[0004] The utility model aims to solve the problem that when a zinc cylinder of a dry cell in the prior art is punctured and a hole is formed, the electrolyte in the battery body will leak out from the damaged position of the zinc cylinder to the outside, causing a potential safety hazard.

[0005] In order to solve the above problems, the utility model provides a leak-proof battery, including a battery body with a zinc cylinder, characterized in that it also includes a PVC tube, an outer sleeve and an iron bottom, the PVC tube is sleeved on the outside of the zinc cylinder, and the outer peripheral wall of the zinc cylinder close to the positive terminal and the negative terminal of the battery body is respectively provided with structural adhesive arranged along the circumferential direction and connected to the PVC tube, and the positions of the PVC tube close to the positive terminal and the negative terminal of the battery body are heat-shrunk after being connected with the structural adhesive, the outer shell is sleeved on the outside of the PVC tube, the iron bottom is abutted against the negative terminal of the battery body, and the position of the outer shell close to the negative terminal of the battery ladder is connected to the outer peripheral side of the iron bottom through heat shrinkage, and a spacing is left between the iron bottom and the PVC tube.

[0006] Compared with the prior art, the above scheme arranges a PVC tube on the outside of the zinc cylinder, and connects the PVC tube near the positive and negative terminals of the battery body to the zinc cylinder through structural adhesive, so that when the zinc cylinder is damaged, the PVC tube can seal the outer wall of the zinc cylinder, and the structural adhesive can seal the position between the PVC tube and the zinc cylinder near the positive and negative terminals of the battery body, effectively avoiding leakage problems; at the same time, this scheme performs heat shrinkage treatment on the PVC tube near the positive and negative terminals of the battery body after being connected with the structural adhesive, further improving the connection tightness between the PVC tube near the positive and negative terminals of the battery body and the zinc cylinder.

[0007] Preferably, the positions of the outer wall of the zinc cylinder close to the positive terminal and the negative terminal of the battery body are respectively shrunk to form annular step grooves, and the structural adhesive is respectively arranged in the corresponding step grooves, so that on the one hand, more structural adhesive can be accommodated in the step grooves to achieve a better bonding effect between the corresponding positions of the zinc cylinder and the PVC tube, and on the other hand, the corresponding position of the PVC tube can fit better into the step groove after heat shrinkage treatment, so that the PVC tube and the zinc cylinder are more stable in the axial direction.

[0008] Preferably, the outer edges of the step surfaces of the two step grooves are provided with an annular boss arranged along the circumferential direction, and the structural adhesive is arranged on the inner ring side of the annular boss of the corresponding step groove, so as to avoid excessive removal of the structural adhesive in the step groove by the PVC pipe during the process of the PVC pipe being inserted into the outside of the zinc cylinder, thereby ensuring that the structural adhesive in the step groove maintains a sufficient amount of adhesive.

[0009] Preferably, the PVC pipe is shrunk respectively at positions corresponding to the two step grooves, thereby further improving the tightness of the fit between the PVC pipe and the step groove.

[0010] Preferably, the inner wall of the PVC tube is cut into flanging sheets at positions corresponding to the two step grooves, and the flanging sheets are used to contact the structural adhesive in the step grooves, thereby increasing the contact area between the PVC tube and the structural adhesive and improving the connection firmness between the PVC tube and the structural adhesive. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic cross-sectional view of a leakproof battery;

[0012] Figure 2 for Figure 1 A partial enlarged schematic diagram of the middle A area;

[0013] Figure 3 for Figure 1 A partially enlarged schematic diagram of another embodiment of area A.

[0014] Description of reference numerals:

[0015] 1. zinc cylinder; 11. stepped groove; 12. stepped surface; 13. annular boss; 2. PVC tube; 21. flanging sheet; 3. structural adhesive; 4. outer sleeve; 5. iron bottom. DETAILED DESCRIPTION

[0016] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. It should also be noted that all directional indications in the embodiments of the utility model (such as up, down, left, right, front, back, inside, outside) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indication will also change accordingly.

[0017] See also Figure 1 and Figure 2 A leakproof battery provided by an embodiment of the utility model comprises a battery body with a zinc cylinder 1, characterized in that it also comprises a PVC tube 2, an outer sleeve 4 and an iron bottom 5, the PVC tube 2 is sleeved on the outside of the zinc cylinder 1, and the outer peripheral wall of the zinc cylinder 1 near the positive terminal and the negative terminal of the battery body is respectively provided with structural adhesive 3 arranged along the circumferential direction and connected to the PVC tube 2, and the positions of the PVC tube 2 near the positive terminal and the negative terminal of the battery body are heat-shrunk after being connected with the structural adhesive 3, the outer sleeve is sleeved on the outside of the PVC tube 2, the iron bottom 5 is abutted against the negative terminal of the battery body, and the outer sleeve near the negative terminal of the battery ladder is connected to the outer peripheral side of the iron bottom 5 through heat shrinkage, and a spacing is left between the iron bottom 5 and the PVC tube 2.

[0018] Compared with the prior art, the above scheme sets a PVC tube 2 on the outside of the zinc cylinder 1, and connects the position of the PVC tube 2 close to the positive and negative terminals of the battery body to the zinc cylinder 1 through the structural adhesive 3, so that when the zinc cylinder 1 is damaged, the PVC tube 2 can block the outer wall of the zinc cylinder 1, and the structural adhesive 3 can block the position between the PVC tube 2 and the zinc cylinder 1 close to the positive and negative terminals of the battery body, effectively avoiding the leakage problem; at the same time, this scheme heat shrinks the position of the PVC tube 2 close to the positive and negative terminals of the battery body after connecting with the structural adhesive 3, further improving the connection tightness between the position of the PVC tube 2 close to the positive and negative terminals of the battery body and the zinc cylinder 1. In addition, the outer sleeve 4 is used to connect the iron bottom 5, and while ensuring that the iron bottom 5 is in contact with the negative terminal of the battery body, a gap is left between the iron bottom 5 and the PVC tube 2 to ensure that the iron bottom 5 will not contact the leaking liquid closed by the PVC tube 2.

[0019] It should be pointed out that the heat shrinkage treatment means that before the PVC tube 2 is put on the outside of the zinc cylinder 1, the position of the PVC tube 2 close to the positive and negative terminals of the battery body is first heated, and then the PVC tube 2 is put on the outside of the zinc cylinder 1. At this time, the position of the PVC tube 2 close to the positive and negative terminals of the battery body is in contact and adhered to the structural adhesive 3 on the outside of the zinc cylinder 1, and then as the heated position of the PVC tube 2 cools and shrinks, it is the heat shrinkage treatment referred to in this scheme.

[0020] As an optimization of this embodiment, the positions of the outer wall of the zinc cylinder 1 close to the positive terminal and the negative terminal of the battery body are respectively shrunk to form annular step grooves 11, and the structural adhesives 3 are respectively arranged in the corresponding step grooves 11, so that on the one hand, more structural adhesives 3 can be accommodated in the step grooves 11 to achieve a better bonding effect between the corresponding positions of the zinc cylinder 1 and the PVC pipe 2, and on the other hand, the corresponding position of the PVC pipe 2 can fit better into the step groove 11 after heat shrinkage treatment, so that the PVC pipe 2 and the zinc cylinder 1 are more stable in the axial direction.

[0021] Furthermore, the outer edges of the step surfaces 12 of the two step grooves 11 are provided with an annular boss 13 arranged along the circumferential direction, and the structural adhesive 3 is arranged on the inner ring side of the annular boss 13 of the corresponding step groove 11, thereby avoiding that the structural adhesive 3 in the step groove 11 is excessively brought out by the PVC pipe 2 during the process of the PVC pipe 2 being inserted into the outer side of the zinc cylinder 1, and ensuring that the structural adhesive 3 in the step groove 11 maintains a sufficient amount of adhesive.

[0022] As an optimization of this embodiment, the PVC pipe 2 is shrunk at the positions corresponding to the two step grooves 11.

[0023] This further improves the fit between the PVC pipe 2 and the stepped groove 11 .

[0024] Further, such as Figure 3 As shown, the inner wall of the PVC tube 2 is cut into flanging sheets 21 at positions corresponding to the two step grooves 11. The flanging sheets 21 are annular and bent in the direction of the step groove 11. The flanging sheets 21 are used to contact the structural adhesive 3 of the step groove 11, thereby increasing the contact area between the PVC tube 2 and the structural adhesive 3 and improving the connection firmness between the PVC tube 2 and the structural adhesive 3.

[0025] Although the disclosure is as above, the protection scope of the disclosure is not limited thereto. For those skilled in the art, various changes and modifications can be made without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A leakproof battery, comprising a battery body with a zinc cylinder (1), characterized in that: It also includes a PVC tube (2), an outer sleeve (4) and an iron bottom (5), wherein the PVC tube (2) is sleeved on the outside of the zinc cylinder (1), and the outer peripheral wall of the zinc cylinder (1) is provided with structural adhesives (3) arranged along the circumferential direction and connected to the PVC tube (2) at positions close to the positive terminal and the negative terminal of the battery body, and the positions of the PVC tube (2) close to the positive terminal and the negative terminal of the battery body are heat-shrunk after being connected to the structural adhesives (3), the outer sleeve (4) is sleeved on the outside of the PVC tube (2), and the iron bottom (5) is abutted against the negative terminal of the battery body, and the position of the outer sleeve (4) close to the negative terminal of the battery ladder is connected to the outer peripheral side of the iron bottom (5) through heat shrinkage, and a spacing is left between the iron bottom (5) and the PVC tube (2).

2. A leakproof battery according to claim 1, characterized in that: The positions of the outer peripheral wall of the zinc cylinder (1) close to the positive terminal and the negative terminal of the battery body are respectively contracted to form annular stepped grooves (11), and the structural adhesive (3) is respectively arranged in the corresponding stepped grooves (11).

3. A leakproof battery according to claim 2, characterized in that: The outer edges of the step surfaces (12) of the two step grooves (11) are each provided with an annular boss (13) arranged in the circumferential direction, and the structural adhesive (3) is arranged on the inner ring side of the annular boss (13) of the corresponding step groove (11).

4. A leakproof battery according to claim 2 or 3, characterized in that: The PVC pipe (2) is contracted respectively at positions corresponding to the two stepped grooves (11).

5. A leakproof battery according to claim 4, characterized in that: The inner peripheral wall of the PVC tube (2) is cut into flanged thin sheets (21) at positions corresponding to the two stepped grooves (11).

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