A liquid leakage-proof alkaline battery

Abstract

The utility model discloses a kind of leakage-proof alkaline batteries, including positive material filling layer and negative material filling layer, diaphragm layer is equipped between positive material filling layer and negative material filling layer, the outside of positive material filling layer is wrapped with steel shell, the bottom of negative material filling layer is fixedly connected with copper needle, the bottom end of copper needle is fixedly connected with negative metal sheet, the bottom end of positive material filling layer and negative material filling layer is equipped with baffle, and baffle is fixed with steel shell, the top end of positive material filling layer is fixedly connected with positive metal cap, the bottom of baffle is fixedly connected with sealing gasket, and sealing gasket is fixed with negative metal sheet, the utility model not only can be connected more closely between copper needle and baffle and sealing gasket by sealing ring, but also can be connected more closely between steel shell and negative metal sheet by sealing ring, so that the sealing effect of battery is further improved in long time use, avoid the condition that battery is prone to leakage.

Description

Technical Field

[0001] This utility model relates to the field of alkaline battery technology, and in particular to an alkaline battery that is leak-proof. Background Technology

[0002] Alkaline batteries are dry cell batteries that use zinc as the negative electrode, manganese dioxide as the positive electrode, and potassium hydroxide or sodium hydroxide as the electrolyte. They belong to the category of primary batteries in chemical power sources. Their core characteristics include high energy density, long discharge time, and environmental friendliness, and they are widely used in various electronic devices.

[0003] In alkaline batteries, the sealing effect deteriorates after prolonged use, making the battery prone to leakage, which affects the normal operation of the battery, causes battery performance degradation and safety hazards. In order to better address the above problems, promote the development of industry technology, and improve core competitiveness, this application proposes a new composition structure that is different from the existing technology. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a leak-proof alkaline battery.

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

[0006] A leak-proof alkaline battery includes a positive electrode material filling layer and a negative electrode material filling layer, with a separator layer between the two layers. The positive electrode material filling layer is encased in a steel shell. A copper needle is fixedly connected to the bottom of the negative electrode material filling layer, and a negative electrode metal sheet is fixedly connected to the bottom end of the copper needle. A separator is provided at the bottom ends of both the positive and negative electrode material filling layers and is fixed to the steel shell. A positive electrode metal cap is fixedly connected to the top of the positive electrode material filling layer. A sealing gasket is fixedly connected to the bottom of the separator and is fixed to the negative electrode metal sheet. An annular groove is formed at the bottom end of the copper needle, and a sealing ring is fixedly connected to the outside of the groove. A groove is formed on the outside of the negative electrode metal sheet. A sealing ring is fixedly connected to the bottom of the steel shell and engages with the groove.

[0007] As a further improvement of this invention, the sealing ring and sealing ring are made of nitrile rubber.

[0008] As a further improvement of this invention, a stepped groove is provided on the outer side of the sealing ring.

[0009] As a further embodiment of this invention, the copper needle passes through the partition and the sealing gasket.

[0010] As a further improvement of this invention, the sealing ring and sealing ring are made of perfluoroether rubber.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. In this utility model, the sealing ring makes the connection between the copper needle, the separator, and the sealing gasket tighter, and the sealing ring makes the connection between the steel shell and the negative electrode metal sheet tighter, thereby further improving the sealing effect of the battery during long-term use and preventing the battery from easily leaking.

[0013] 2. In this utility model, the sealing ring and sealing ring are made of rubber, which can effectively isolate the battery from electrolyte leakage and chemical corrosion, ensure the stability of the internal structure of the battery, reduce wear between battery components, and extend service life. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a leak-proof alkaline battery proposed in this utility model.

[0015] Figure 2 This is a cross-sectional view of the steel casing of an alkaline battery that is leak-proof, according to the present invention.

[0016] Figure 3 This is a partial cross-sectional view of an alkaline battery that is leak-proof, according to the present invention.

[0017] In the diagram: 1. Positive electrode metal cap; 4. Steel shell; 6. Positive electrode material filling layer; 7. Separator layer; 8. Negative electrode material filling layer; 9. Separator; 10. Sealing ring; 11. Copper needle; 12. Sealing ring; 13. Groove; 14. Negative electrode metal sheet; 15. Ring groove; 16. Stepped groove; 17. Sealing gasket. Detailed Implementation

[0018] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Therefore, all other embodiments of this application described herein, and all embodiments obtained by those skilled in the art without creative effort based on the embodiments in this application, should fall within the scope of protection of this application.

[0019] Example 1

[0020] Reference Figures 1-3 A leak-proof alkaline battery includes a positive electrode material filling layer 6 and a negative electrode material filling layer 8.

[0021] A separator layer 7 is provided between the positive electrode material filling layer 6 and the negative electrode material filling layer 8. The separator layer 7 is an alkali-resistant polyethylene or polypropylene film with a thickness between 20-50 μm.

[0022] A positive electrode metal cap 1 is welded to the top of the positive electrode material filling layer 6. A steel shell 4 is wrapped around the outside of the positive electrode material filling layer 6. The wall thickness of the steel shell 4 is 0.3-0.5mm. The working pressure range of the sealing system is -10kPa to 50kPa. The inner wall of the steel shell 4 is treated with an anti-corrosion coating.

[0023] A copper needle 11 is welded to the bottom of the negative electrode material filling layer 8, and a negative electrode metal sheet 14 is welded to the bottom end of the copper needle 11.

[0024] The bottom ends of the positive electrode material filling layer 6 and the negative electrode material filling layer 8 are provided with a partition 9, and the partition 9 is fixed to the steel shell 4;

[0025] A sealing gasket 17 is bonded to the bottom of the partition 9, and the sealing gasket 17 is fixed to the negative electrode metal sheet 14. The thickness of the sealing gasket 17 is 0.9-1.1mm, and the permanent compression deformation is ≤15%.

[0026] The bottom end of the copper needle 11 is provided with an annular groove 15, and a sealing ring 10 is bonded to the outside of the annular groove 15. The sealing ring 10 needs to be coated with sealing grease during assembly. The outer side of the negative electrode metal sheet 14 is provided with a groove 13.

[0027] A sealing ring 12 is bonded to the bottom of the steel shell 4, and the sealing ring 12 is engaged with the groove 13. The fit tolerance between the sealing ring 12 and the groove 13 is H8 / f7.

[0028] The sealing ring 10 and sealing ring 12 are made of perfluoroether rubber. Perfluoroether rubber can withstand corrosive media such as concentrated acid, strong alkali, organic solvent and high temperature steam, effectively isolating the electrolyte or corrosive gas from erosion of the internal structure of the battery. The compression rate of the sealing ring 10 is controlled at 15-25%, and the rebound rate is ≥80%.

[0029] A pressure relief valve can be installed at the bottom of the steel shell 4, with an opening pressure of 0.3-0.5MPa;

[0030] A stepped groove 16 is provided on the outer side of the sealing ring 10, and the copper needle 11 passes through the partition 9 and the sealing gasket 17.

[0031] Working principle: When a leak-proof alkaline battery is required, the sealing ring 10 makes the connection between the copper needle 11, the separator 9, and the sealing gasket 17 tighter, and the sealing ring 12 makes the connection between the steel shell 4 and the negative electrode metal sheet 14 tighter. The sealing ring 10 and the sealing ring 12 are made of perfluoroether rubber. Perfluoroether rubber can withstand corrosive media such as concentrated acid, strong alkali, organic solvents, and high-temperature steam, effectively isolating the electrolyte or corrosive gas from eroding the internal structure of the battery.

[0032] Example 2

[0033] Reference Figures 1-3An alkaline battery that prevents leakage includes a positive electrode material filling layer 6 and a negative electrode material filling layer 8, with a separator layer 7 provided between the positive electrode material filling layer 6 and the negative electrode material filling layer 8.

[0034] A steel shell 4 is wrapped around the outside of the positive electrode material filling layer 6. A copper needle 11 is welded to the bottom of the negative electrode material filling layer 8. A negative electrode metal sheet 14 is welded to the bottom of the copper needle 11. A partition 9 is provided at the bottom of the positive electrode material filling layer 6 and the negative electrode material filling layer 8. The partition 9 is fixed to the steel shell 4. A positive electrode metal cap 1 is welded to the top of the positive electrode material filling layer 6. A sealing gasket 17 is bonded to the bottom of the partition 9. The sealing gasket 17 is fixed to the negative electrode metal sheet 14. An annular groove 15 is opened at the bottom of the copper needle 11. A sealing ring 10 is bonded to the outside of the annular groove 15. A groove 13 is opened on the outside of the negative electrode metal sheet 14. A sealing ring 12 is bonded to the bottom of the steel shell 4. The sealing ring 12 is engaged with the groove 13.

[0035] The sealing ring 10 and sealing ring 12 are made of nitrile rubber. Nitrile rubber exhibits excellent resistance to fuel oil, lubricating oil and aromatic solvents, effectively isolating electrolyte leakage and chemical corrosion, ensuring the stability of the internal structure of the battery. It has a high elastic modulus and a low coefficient of friction, which can reduce wear between battery components and extend service life. During the frequent charging and discharging of the power battery, its anti-fatigue performance is significant. A stepped groove 16 is opened on the outer side of the sealing ring 10, and the copper needle 11 passes through the separator 9 and the sealing gasket 17.

[0036] Working principle: When a leak-proof alkaline battery is required, the sealing ring 10 makes the connection between the copper needle 11, the separator 9, and the sealing gasket 17 tighter, and the sealing ring 12 makes the connection between the steel shell 4 and the negative electrode metal sheet 14 tighter. The sealing ring 10 and the sealing ring 12 are made of nitrile rubber. Nitrile rubber exhibits excellent resistance to fuel oil, lubricating oil, and aromatic solvents, effectively isolating electrolyte leakage and chemical corrosion, ensuring the stability of the internal structure of the battery. It has a high elastic modulus and a low coefficient of friction, which can reduce wear between battery components and extend service life. During the frequent charging and discharging of the power battery, its fatigue resistance is significant.

[0037] This utility model has been described through the above embodiments. Those skilled in the art will understand that this utility model is not limited to the above embodiments. Many more modifications can be made based on the teachings of this utility model, and all such modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A leak-proof alkaline battery, comprising a positive electrode material filling layer (6) and a negative electrode material filling layer (8), wherein a separator layer (7) is provided between the positive electrode material filling layer (6) and the negative electrode material filling layer (8), a steel shell (4) is wrapped around the outside of the positive electrode material filling layer (6), a copper needle (11) is fixedly connected to the bottom of the negative electrode material filling layer (8), a negative electrode metal sheet (14) is fixedly connected to the bottom end of the copper needle (11), a separator (9) is provided at the bottom end of the positive electrode material filling layer (6) and the negative electrode material filling layer (8), and the separator (9) is fixed to the steel shell (4), and a positive electrode metal cap (1) is fixedly connected to the top end of the positive electrode material filling layer (6), characterized in that, A sealing gasket (17) is fixedly connected to the bottom of the partition (9), and the sealing gasket (17) is fixed to the negative electrode metal sheet (14). A ring groove (15) is opened at the bottom end of the copper needle (11), and a sealing ring (10) is fixedly connected to the outside of the ring groove (15). A stepped groove (16) is opened on the outside of the sealing ring (10), and the copper needle (11) passes through the partition (9) and the sealing gasket (17). A groove (13) is opened on the outside of the negative electrode metal sheet (14). A sealing ring (12) is fixedly connected to the bottom of the steel shell (4), and the sealing ring (12) engages with the groove (13).

2. The leak-proof alkaline battery according to claim 1, characterized in that, The sealing ring (10) and sealing ring (12) are made of nitrile rubber.

3. The leak-proof alkaline battery according to claim 1, characterized in that, The sealing ring (10) and sealing ring (12) are made of perfluoroether rubber.

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