Low-current constant-current discharge silver oxide button cell

Abstract

The utility model discloses a low-current constant-current discharge silver oxide button cell which comprises a positive pole shell, a first soldering lug is fixedly connected to the outer side of the positive pole shell, a protective shell is fixedly connected to the interior of the positive pole shell, and a polyethylene-acrylic acid grafting film is fixedly connected to the interior of the first soldering lug. Silver oxide used by a positive electrode filler material in the battery is granulated, that is, the silver oxide is granulated, the porosity of silver oxide particles is high, electrolyte is easy to transfer, the battery can maintain discharge in a high-voltage region and the discharge time is prolonged, and the used diaphragm comprises three layers, namely, one layer of polyethylene-acrylic acid grafted film and two layers of cellophane, so that the service life of the battery is prolonged. The polyethylene-acrylic acid grafted film is in contact with the positive electrode cake, the glass paper is in contact with the negative electrode filler, the negative electrode filler is zinc paste, and the three-layer diaphragm reduces the internal resistance of the battery, and is also beneficial to maintaining high-voltage region discharge and prolonging the discharge time of the battery.

Description

Technical Field

[0001] This utility model relates to the field of button battery technology, specifically a low-current constant-discharge silver oxide button battery. Background Technology

[0002] Button batteries are small, compact batteries commonly used in various small electronic devices. They are flat, small batteries, usually round or square, named for their button-like size. There are several types of button batteries, including lithium-ion and silver oxide batteries. Lithium-ion batteries are the most common type, offering higher voltage and longer lifespan. Button batteries are characterized by their small size, light weight, large capacity, and stable discharge. They are widely used in various small electronic devices such as watches, calculators, electronic scales, hearing aids, and electronic toys. Furthermore, they are used in specialized applications such as backup power for pacemakers and certain medical devices.

[0003] In existing devices, conventional silver oxide button batteries use a four-layer separator. During the assembly process, this four-layer separator easily leads to wrinkles and bubbles. Wrinkles and bubbles affect the wettability of the electrolyte, resulting in uneven distribution of internal resistance, which in turn affects the battery's consistency and cycle stability. Furthermore, the use of a four-layer separator increases the complexity of battery assembly. Therefore, we need to propose a low-current constant-discharge silver oxide button battery. Utility Model Content

[0004] The purpose of this invention is to provide a low-current constant-discharge silver oxide button battery. The silver oxide used in the positive electrode filler material inside the battery is granulated, meaning that the silver oxide itself has been granulated. The silver oxide particles have high porosity, which facilitates electrolyte transfer and helps the battery maintain high-voltage discharge and increase discharge time. The separator used is a three-layer separator: a layer of polyethylene-acrylic acid grafted membrane and two layers of cellophane. The polyethylene-acrylic acid grafted membrane is in contact with the positive electrode cake, and the cellophane is in contact with the negative electrode filler, which is zinc paste. The three-layer separator reduces the internal resistance of the battery and also helps the battery maintain high-voltage discharge and increase discharge time, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A low-current constant-discharge silver oxide button battery includes a positive electrode shell, a first welding piece fixedly connected to the outer side of the positive electrode shell, a protective shell fixedly connected to the inside of the positive electrode shell, a polyethylene-acrylic acid grafted membrane fixedly connected to the inside of the first welding piece, a positive electrode filler disposed at the lower end of the polyethylene-acrylic acid grafted membrane, a first cellophane disposed at the lower end of the positive electrode filler, a negative electrode filler disposed at the lower end of the first cellophane, a second cellophane disposed at the lower end of the negative electrode filler, an insulating ring disposed at the lower end of the second cellophane, the insulating ring contacting the positive electrode shell and the negative electrode sheet respectively, a negative electrode sheet disposed at the lower end of the second cellophane, and a second welding piece rotatably connected to the lower end of the negative electrode sheet.

[0007] Preferably, the protective shell is in contact with the first welding sheet, the protective shell, the polyethylene-acrylic grafted film, the positive electrode filler, the first cellophane, the negative electrode filler, and the second cellophane.

[0008] Preferably, a fixing frame is fixedly connected to the lower end of the negative electrode sheet, and the fixing frame is rotatably connected to the second welding sheet.

[0009] Preferably, the second welding piece is internally fixedly connected to an installation tube, the installation tube is internally slidably connected to a movable frame, and the movable frame is sleeved with a spring on its outer side.

[0010] Preferably, a movable block is fixedly connected to one end of the movable frame, and the movable block is in contact with the mounting tube.

[0011] Preferably, a limiting rod is fixedly connected to the upper end of the movable frame, and the limiting rod is slidably connected to the mounting tube.

[0012] Preferably, the lower end of the negative electrode sheet is provided with a plurality of limiting seats arranged in a ring, and the plurality of limiting seats are rotatably connected to the protective shell, and the limiting seats are slidably connected to the limiting rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention features a pre-granulated silver oxide filling material for the positive electrode inside the battery. The silver oxide particles have high porosity, facilitating electrolyte transfer and helping the battery maintain high-voltage discharge and extend discharge time. The separator consists of three layers: a polyethylene-acrylic acid grafted membrane and two layers of cellophane. The polyethylene-acrylic acid grafted membrane contacts the positive electrode cake, while the cellophane contacts the negative electrode filling material, which is zinc paste. This three-layer separator reduces the battery's internal resistance, further contributing to maintaining high-voltage discharge and extending discharge time. Attached Figure Description

[0015] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0016] Figure 2 This is the second structural schematic diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0018] Figure 4 This is a schematic diagram of the internal structure of the mounting tube of this utility model.

[0019] In the diagram: 1. Positive electrode shell; 2. First welding piece; 3. Protective shell; 4. Polyethylene-acrylic acid grafted film; 5. Positive electrode filler; 6. First cellophane; 7. Negative electrode filler; 8. Second cellophane; 9. Insulating ring; 10. Negative electrode sheet; 11. Second welding piece; 12. Fixing frame; 13. Mounting tube; 14. Moving frame; 15. Moving block; 16. Spring; 17. Limiting rod; 18. Limiting seat. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution:

[0022] A low-current constant-discharge silver oxide button battery includes a positive electrode shell 1, a first welding piece 2 fixedly connected to the outside of the positive electrode shell 1, a protective shell 3 fixedly connected to the inside of the positive electrode shell 1, a polyethylene-acrylic acid grafted membrane 4 fixedly connected to the inside of the first welding piece 2, a positive electrode filler 5 disposed at the lower end of the polyethylene-acrylic acid grafted membrane 4, a first cellophane 6 disposed at the lower end of the positive electrode filler 5, a negative electrode filler 7 disposed at the lower end of the first cellophane 6, a second cellophane 8 disposed at the lower end of the negative electrode filler 7, an insulating ring 9 disposed at the lower end of the second cellophane 8, the insulating ring 9 contacting the positive electrode shell 1 and the negative electrode piece 10 respectively, a negative electrode piece 10 disposed at the lower end of the second cellophane 8, and a second welding piece 11 rotatably connected to the lower end of the negative electrode piece 10.

[0023] For example, the silver oxide used in the positive electrode filler 5 inside the battery is granulated, that is, the silver oxide itself is granulated. The silver oxide particles have high porosity, which makes it easy for the electrolyte to be transferred, which is beneficial for the battery to maintain high-voltage discharge and increase discharge time. The separator used is three-layered: one layer of polyethylene-acrylic acid grafted membrane 4 and two layers of cellophane. The polyethylene-acrylic acid grafted membrane 4 is in contact with the positive electrode shell 1, and the cellophane is in contact with the negative electrode filler 7. The negative electrode filler 7 is zinc paste. The three-layer separator reduces the internal resistance of the battery, which is also beneficial for the battery to maintain high-voltage discharge and increase discharge time. The positive and negative electrodes are welded with solder pads to connect the equipment. The contacts of the positive and negative electrode solder pads can be in the same direction, opposite directions, or at the required angle.

[0024] The protective shell 3 is in contact with the first welding piece 2, the protective shell 3, the polyethylene-acrylic grafted film 4, the positive electrode filler 5, the first cellophane 6, the negative electrode filler 7, and the second cellophane 8, respectively.

[0025] For example, the protective shell 3 protects the positive electrode shell 1 from corrosion.

[0026] A fixing frame 12 is fixedly connected to the lower end of the negative electrode 10. The fixing frame 12 is rotatably connected to the second welding piece 11. An installation tube 13 is fixedly connected inside the second welding piece 11. A movable frame 14 is slidably connected inside the installation tube 13. A spring 16 is sleeved on the outside of the movable frame 14. A movable block 15 is fixedly connected to one end of the movable frame 14. The movable block 15 is in contact with the installation tube 13. A limit rod 17 is fixedly connected to the upper end of the movable frame 14. The limit rod 17 is slidably connected to the installation tube 13. A plurality of limit seats 18 are arranged in a ring at the lower end of the negative electrode 10. The plurality of limit seats 18 are rotatably connected to the protective shell 3. The limit seats 18 are slidably connected to the limit rod 17.

[0027] For example, the moving frame 14 is moved by the moving block 15, the moving frame 14 compresses the spring 16, the moving frame 14 drives the limiting rod 17 to disengage from the limiting seat 18, releases the limitation on the second welding piece 11, and allows the second welding piece 11 to be rotated and its angle to be adjusted. When the moving block 15 is released, under the elastic force of the spring 16, the moving frame 14 drives the limiting rod 17 to move. The limiting rod 17 is stuck inside the limiting seat 18 at different positions, limiting the second welding piece 11.

[0028] Working principle: When this utility model is used, the silver oxide used in the positive electrode filler 5 inside the battery is granulated, that is, the silver oxide itself is granulated. The silver oxide particles have a high porosity, which makes it easy for the electrolyte to be transferred. This is beneficial for the battery to maintain high-voltage discharge and increase discharge time. The separator used is three-layered: one layer of polyethylene-acrylic acid grafted membrane 4, two layers of cellophane. The polyethylene-acrylic acid grafted membrane 4 is in contact with the positive electrode shell 1, and the cellophane is in contact with the negative electrode filler 7. The negative electrode filler 7 is zinc paste. The three-layer separator reduces the internal resistance of the battery, which is also beneficial for the battery to maintain high-voltage discharge and increase discharge time.

[0029] Positive and negative electrodes are welded with welding plates to connect the equipment. The contacts of the positive and negative electrodes can be in the same direction, opposite directions, or at the required angle. The moving frame 14 is moved by the moving block 15. The moving frame 14 compresses the spring 16. The moving frame 14 drives the limiting rod 17 to disengage from the limiting seat 18, releasing the limitation on the second welding plate 11. The second welding plate 11 can be rotated and its angle can be adjusted. When the moving block 15 is released, under the elastic force of the spring 16, the moving frame 14 drives the limiting rod 17 to move. The limiting rod 17 is locked inside the limiting seat 18 at different positions, limiting the second welding plate 11.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-current constant-discharge silver oxide button cell, comprising a positive electrode casing (1), characterized in that: A first welding piece (2) is fixedly connected to the outside of the positive electrode shell (1). A protective shell (3) is fixedly connected to the inside of the positive electrode shell (1). A polyethylene-acrylic acid grafted membrane (4) is fixedly connected to the inside of the first welding piece (2). A positive electrode filler (5) is provided at the lower end of the polyethylene-acrylic acid grafted membrane (4). A first cellophane (6) is provided at the lower end of the positive electrode filler (5). A negative electrode filler (7) is provided at the lower end of the first cellophane (6). A second cellophane (8) is provided at the lower end of the negative electrode filler (7). An insulating ring (9) is provided at the lower end of the second cellophane (8). The insulating ring (9) is in contact with the positive electrode shell (1) and the negative electrode sheet (10) respectively. A negative electrode sheet (10) is provided at the lower end of the second cellophane (8). A second welding piece (11) is rotatably connected to the lower end of the negative electrode sheet (10).

2. The low-current constant-discharge silver oxide button battery according to claim 1, characterized in that: The protective shell (3) is in contact with the first welding sheet (2), the protective shell (3), the polyethylene-acrylic acid grafted film (4), the positive electrode filler (5), the first cellophane (6), the negative electrode filler (7), and the second cellophane (8), respectively.

3. The low-current constant-discharge silver oxide button battery according to claim 1, characterized in that: The lower end of the negative electrode (10) is fixedly connected to a fixing frame (12), and the fixing frame (12) is rotatably connected to the second welding piece (11).

4. The low-current constant-discharge silver oxide button battery according to claim 3, characterized in that: The second welding piece (11) is fixedly connected to the inside of the mounting tube (13), and the inside of the mounting tube (13) is slidably connected to the movable frame (14), and the outside of the movable frame (14) is fitted with a spring (16).

5. A low-current constant-discharge silver oxide button cell according to claim 4, characterized in that: One end of the movable frame (14) is fixedly connected to a movable block (15), and the movable block (15) is in contact with the mounting tube (13).

6. A low-current constant-discharge silver oxide button battery according to claim 5, characterized in that: The upper end of the movable frame (14) is fixedly connected to a limiting rod (17), and the limiting rod (17) is slidably connected to the mounting tube (13).

7. A low-current constant-discharge silver oxide button cell according to claim 3, characterized in that: The lower end of the negative electrode sheet (10) is provided with a plurality of ring-shaped limiting seats (18), and the plurality of limiting seats (18) are rotatably connected to the protective shell (3), and the limiting seats (18) are slidably connected to the limiting rod (17).

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