High pressure sealing device for alkaline batteries

Abstract

The utility model discloses a high pressure sealing device of alkaline battery, including steel shell, be equipped with diaphragm layer in steel shell, the outside of diaphragm layer is equipped with positive material layer, be equipped with negative material layer in diaphragm layer, the bottom of diaphragm layer, positive material layer and negative material layer is equipped with sealing assembly, and sealing assembly includes first sealing washer, and the top of first sealing washer is equipped with second sealing washer, and the top of second sealing washer is equipped with third sealing washer, the bottom of first sealing washer is connected with negative cover, and the top of negative cover is welded with copper needle, and the top of copper needle is sealed with first sealing washer, second sealing washer and third sealing washer and inserts, the circumference of first sealing washer and second sealing washer is equipped with inner groove. The utility model discloses through first sealing washer, second sealing washer and third sealing washer to alkaline battery multiple sealing to prevent the leakage of liquid in alkaline battery, and the sealing effect of alkaline battery is improved.

Description

Technical Field

[0001] This utility model relates to the field of alkaline battery technology, and in particular to a high-pressure sealing device for alkaline batteries. Background Technology

[0002] Alkaline batteries are also known as alkaline dry batteries, alkaline zinc-manganese batteries, or alkaline manganese batteries. In the structure of an alkaline battery, a high-pressure sealing device is installed between the battery steel casing and the negative electrode cover to prevent electrolyte leakage and ensure safe use.

[0003] Currently, the high-voltage sealing devices in existing alkaline batteries are only single-layer seals, resulting in poor sealing performance for alkaline batteries. Therefore, in order to advance industry technology, better realize the internal sealing function of alkaline batteries, and improve core technology competitiveness, this application proposes a new implementation scheme that differs from the structure of the high-voltage sealing device for alkaline batteries in the prior art. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the high-pressure sealing device in existing alkaline batteries is only a single-layer seal, resulting in poor sealing effect of the high-pressure sealing device for alkaline batteries, and to propose a high-pressure sealing device for alkaline batteries.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-voltage sealing device for an alkaline battery includes a steel shell, a separator layer inside the steel shell, a positive electrode material layer on the outer side of the separator layer, and a negative electrode material layer inside the separator layer. A sealing assembly is provided at the bottom of the separator layer, the positive electrode material layer, and the negative electrode material layer. The sealing assembly includes a first sealing gasket, a second sealing gasket at the top of the first sealing gasket, and a third sealing gasket at the top of the second sealing gasket. A negative electrode cap is snapped onto the bottom of the first sealing gasket, and a copper needle is welded to the top of the negative electrode cap. The top of the copper needle is sealed and inserted into the first, second, and third sealing gaskets. The first and second sealing gaskets have inner grooves on their circumferences. Two outer grooves are stamped on the outer circumference of the steel shell, and the outer grooves snap onto the inner grooves.

[0007] Furthermore, a limiting ring is fixedly connected to the bottom end of the steel shell, and the negative electrode cover is located inside the limiting ring.

[0008] Furthermore, both the outer wall of the steel shell and the outer wall of the limiting ring are covered with a packaging shell.

[0009] Furthermore, the top of the first sealing gasket is provided with a first fixing groove, and a first support piece is engaged in the first fixing groove.

[0010] Furthermore, the bottom of the third sealing gasket is provided with a second fixing groove, and a second support piece is engaged in the second fixing groove.

[0011] Furthermore, the tip of the copper needle is inserted into the negative electrode material layer.

[0012] Furthermore, the positive electrode material layer is located between the steel shell and the separator layer.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The alkaline battery is sealed multiple times by the first sealing gasket, the second sealing gasket and the third sealing gasket, thereby preventing the leakage of liquid inside the alkaline battery and improving the sealing effect of the alkaline battery.

[0015] 2. The first and second support plates increase the support performance of the first and third sealing gaskets, thereby preventing deformation of the first and third sealing gaskets and ensuring the sealing performance of the alkaline battery. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a high-voltage sealing device for an alkaline battery proposed in this utility model.

[0017] Figure 2 This is a cross-sectional front view schematic diagram of a high-voltage sealing device for an alkaline battery proposed in this utility model.

[0018] Figure 3 This is a partial cross-sectional view of a high-voltage sealing device for an alkaline battery proposed in this utility model.

[0019] Figure 4 This is a cross-sectional view of the sealing assembly of a high-voltage sealing device for an alkaline battery proposed in this utility model.

[0020] Figure 5 This is a cross-sectional view of the sealing assembly in the exploded separation state of a high-voltage sealing device for an alkaline battery according to this utility model.

[0021] Figure 6 This is a bottom view of the cross-sectional structure of the packaging shell of a high-voltage sealing device for an alkaline battery proposed in this utility model.

[0022] In the diagram: 1. Steel shell; 2. Separator layer; 3. Positive electrode material layer; 4. Negative electrode material layer; 5. Sealing assembly; 501. First sealing gasket; 502. Second sealing gasket; 503. Third sealing gasket; 6. Negative electrode cap; 7. Copper needle; 8. Inner groove; 9. Outer groove; 10. Limiting ring; 11. Packaging shell; 12. First fixing groove; 13. First support piece; 14. Second fixing groove; 15. Second support piece. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figures 1-6 A high-voltage sealing device for an alkaline battery includes a steel shell 1, which may be nickel-plated steel strip; a separator layer 2 is provided inside the steel shell 1, which may be PP / PE two-component composite nonwoven fabric; a positive electrode material layer 3 is provided on the outside of the separator layer 2, which may be manganese dioxide composite conductive agent; a negative electrode material layer 4 is provided inside the separator layer 2, which may be zinc powder layer; the separator layer 2 separates the positive electrode material layer 3 from the negative electrode material layer 4.

[0025] A sealing assembly 5 is provided at the bottom of the membrane layer 2, the positive electrode material layer 3 and the negative electrode material layer 4. The sealing assembly 5 includes a first sealing gasket 501, which can be a fluororubber gasket. A second sealing gasket 502 is provided at the top of the first sealing gasket 501, which can be a hydrogenated nitrile rubber gasket. A third sealing gasket 503 is provided at the top of the second sealing gasket 502, which can be a polytetrafluoroethylene gasket.

[0026] The bottom of the first sealing gasket 501 is snapped with a negative electrode cover 6, which can be electrolytic copper plated with nickel. The top of the negative electrode cover 6 is ultrasonically welded with a copper needle 7, which can be oxygen-free copper TU1. The top of the copper needle 7 is sealed and inserted into the first sealing gasket 501, the second sealing gasket 502 and the third sealing gasket 503. The first sealing gasket 501, the second sealing gasket 502 and the third sealing gasket 503 provide multiple seals for the alkaline battery, thereby preventing leakage of liquid inside the alkaline battery.

[0027] The first sealing gasket 501 and the second sealing gasket 502 are provided with an inner groove 8 on their circumference. The outer wall of the steel shell 1 is stamped with two outer grooves 9. The outer grooves 9 are engaged with the inner grooves 8, thereby enhancing the connection performance between the first sealing gasket 501 and the second sealing gasket 502 and the steel shell 1.

[0028] The bottom end of the steel shell 1 is integrally formed with a limiting ring 10, and the negative electrode cover 6 is located inside the limiting ring 10, thereby limiting the negative electrode cover 6. The outer wall of the steel shell 1 and the outer wall of the limiting ring 10 are both wrapped with a packaging shell 11, which is made of flame-retardant PP material.

[0029] The top of the first sealing gasket 501 is provided with a first fixing groove 12, and a first support piece 13 is snapped into the first fixing groove 12. The bottom of the third sealing gasket 503 is provided with a second fixing groove 14, and a second support piece 15 is snapped into the second fixing groove 14. The first support piece 13 and the second support piece 15 can be made of 304 stainless steel and have a nickel-plated surface.

[0030] The first support plate 13 and the second support plate 15 increase the support performance of the first sealing gasket 501 and the third sealing gasket 503, thereby preventing the first sealing gasket 501 and the third sealing gasket 503 from deforming. The top of the copper needle 7 is inserted into the negative electrode material layer 4, and the positive electrode material layer 3 is located between the steel shell 1 and the separator layer 2.

[0031] The working principle of this embodiment is as follows: In use, firstly, the first sealing gasket 501, the second sealing gasket 502, and the third sealing gasket 503 provide multiple seals for the alkaline battery to prevent leakage of liquid inside the alkaline battery. Then, the first support plate 13 and the second support plate 15 increase the support performance of the first sealing gasket 501 and the third sealing gasket 503, thereby preventing deformation of the first sealing gasket 501 and the third sealing gasket 503 to ensure the sealing performance of the alkaline battery.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-voltage sealing device for an alkaline battery, comprising a steel shell (1), a separator layer (2) disposed inside the steel shell (1), a positive electrode material layer (3) disposed on the outer side of the separator layer (2), and a negative electrode material layer (4) disposed inside the separator layer (2), characterized in that, The bottom of the diaphragm layer (2), the positive electrode material layer (3), and the negative electrode material layer (4) is provided with a sealing assembly (5). The sealing assembly (5) includes a first sealing gasket (501), a second sealing gasket (502) at the top of the first sealing gasket (501), a third sealing gasket (503) at the top of the second sealing gasket (502), a negative electrode cover (6) snapped into the bottom of the first sealing gasket (501), a copper needle (7) welded to the top of the negative electrode cover (6), and the top of the copper needle (7) being sealed and inserted into the first sealing gasket (501), the second sealing gasket (502), and the third sealing gasket (503). The circumference of the first sealing gasket (501) and the second sealing gasket (502) is provided with an inner groove (8). The outer circumference of the steel shell (1) is stamped with two outer grooves (9), and the outer grooves (9) are snapped into the inner grooves (8).

2. The high-voltage sealing device for an alkaline battery according to claim 1, characterized in that, The bottom end of the steel shell (1) is fixedly connected to a limiting ring (10), and the negative electrode cover (6) is located inside the limiting ring (10).

3. The high-voltage sealing device for an alkaline battery according to claim 1, characterized in that, The outer wall of the steel shell (1) and the outer wall of the limiting ring (10) are both covered with a packaging shell (11).

4. The high-voltage sealing device for an alkaline battery according to claim 1, characterized in that, The top of the first sealing gasket (501) is provided with a first fixing groove (12), and a first support piece (13) is snapped into the first fixing groove (12).

5. The high-voltage sealing device for an alkaline battery according to claim 1, characterized in that, The bottom of the third sealing gasket (503) is provided with a second fixing groove (14), and a second support piece (15) is engaged in the second fixing groove (14).

6. The high-voltage sealing device for an alkaline battery according to claim 1, characterized in that, The top of the copper needle (7) is inserted into the negative electrode material layer (4).

7. The high-voltage sealing device for an alkaline battery according to claim 1, characterized in that, The positive electrode material layer (3) is located between the steel shell (1) and the separator layer (2).

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