Limited special resistor constant resistance discharge silver oxide button cell

Abstract

The utility model discloses a limited special resistor constant resistance discharge silver oxide button cell, which comprises an outer shell, an inner shell, a positive electrode cake, a negative electrode zinc paste and a diaphragm layer, and adopts granulated silver oxide as a main component of a positive electrode powder material. Granulated silver oxide particles are high in porosity, transfer of electrolyte is facilitated, so that the discharge performance of the battery is improved, the stirring time of a positive electrode powder material in the manufacturing process can be shortened through the granulated silver oxide, a four-layer diaphragm structure of a common silver oxide button battery is simplified into a three-layer diaphragm structure, and the production efficiency is improved. According to the three-layer diaphragm structure, the internal resistance of the battery is effectively reduced, the discharge of the battery in a high-voltage region is facilitated, the discharge time is prolonged, and a limited special resistor is arranged in the battery in order to meet the requirement of a specific application scene on constant-resistance discharge of the battery. The resistor can ensure that the battery keeps a constant resistance value in the discharging process, so that the discharging stability and reliability of the battery are improved.

Description

Technical Field

[0001] This utility model relates to the field of button battery technology, specifically a silver oxide button battery with a defined fixed resistance constant resistance discharge. Background Technology

[0002] Silver oxide button batteries are widely used in small electronic devices (such as blood glucose meters and watches). Their core consists of a positive electrode material (silver oxide, manganese dioxide, and graphite), a separator system, and a negative electrode zinc paste. Currently, in the manufacturing process of ordinary silver oxide button batteries, the internal positive electrode powder material is mainly composed of ungranulated silver oxide, electrolytic manganese dioxide, graphite, and other raw materials, which are mixed evenly before granulation. This process results in insufficient porosity of the silver oxide particles and low electrolyte transfer efficiency, thus affecting the battery's discharge performance and discharge time in high-voltage areas. Furthermore, ordinary silver oxide button batteries use a four-layer separator structure, including one layer of polyethylene-acrylic acid grafted membrane, two layers of cellophane, and one layer of paper membrane. This design results in a relatively high internal resistance, further limiting battery performance and causing large voltage fluctuations during discharge, making it impossible to maintain constant resistance discharge, thus affecting the battery's performance and stability. These problems are particularly prominent in scenarios requiring constant resistance discharge, such as medical devices like blood glucose meters. Therefore, we need to propose a silver oxide button battery with a specific resistance constant-resistance discharge capability. Utility Model Content

[0003] The purpose of this invention is to provide a silver oxide button battery with a defined fixed resistance constant resistance discharge, which aims to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A silver oxide button battery with a defined dedicated resistor and constant resistance discharge includes a shell, an inner shell, a positive electrode cake, a negative electrode zinc paste, and a diaphragm layer. The shell is fixedly connected to the outer wall of the inner shell. The positive electrode cake is disposed at the top of the inner shell, the negative electrode zinc paste is disposed at the bottom of the inner shell, and the diaphragm layer is disposed inside the inner shell. The diaphragm layer includes an outer layer, a middle layer disposed inside the outer layer, and an inner layer disposed inside the middle layer. A defined dedicated resistor is disposed in the inner cavity of the inner shell, and a plurality of safety valve assemblies are disposed on the outer wall of the inner shell. The positive electrode cake uses granulated silver oxide as the positive electrode powder material.

[0006] Preferably, the outer layer is a protective film, the middle layer is a polyethylene-acrylic acid grafted film, and the end of the middle layer is in contact with the positive electrode cake.

[0007] Preferably, the inner layer is cellophane, and the end of the inner layer is in contact with the negative electrode zinc paste.

[0008] Preferably, the safety valve assembly includes a positioning cylinder, which is fixedly embedded in the outer wall of the inner shell. A sealing block is slidably connected inside the positioning cylinder, and a spring is fixedly connected to one side of the sealing block. One end of the spring is fixedly connected to one side of the inner wall of the positioning cylinder.

[0009] Preferably, one end of the positioning cylinder is open, and the open end of the positioning cylinder is in communication with the inner cavity of the inner shell.

[0010] Preferably, the outer wall of the positioning cylinder is provided with two sets of pressure relief holes, which are connected to the inner cavity of the outer shell.

[0011] Preferably, the bottom of the outer casing has several sets of through holes, and the several sets of through holes are arranged in a ring array.

[0012] Preferably, a guide block is fixedly connected to the top of the sealing block, and a guide groove adapted to the guide block is provided on the inner wall of the positioning cylinder, and the guide block is slidably connected to the inside of the guide groove.

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

[0014] 1. This invention uses granulated silver oxide as the main component of the cathode powder material. These granulated silver oxide particles have high porosity, which is beneficial for electrolyte transfer, thereby improving the battery's discharge performance. Simultaneously, granulated silver oxide can reduce the stirring time during the cathode powder material manufacturing process, improving production efficiency.

[0015] 2. This invention simplifies the four-layer separator structure of a typical silver oxide button battery to three layers. This three-layer separator structure effectively reduces the battery's internal resistance, which is beneficial for discharge in high-voltage areas and for extending discharge time. To meet the requirements of constant-resistance discharge in specific application scenarios, this invention incorporates a dedicated resistor inside the battery. This resistor ensures that the battery maintains a constant resistance value during discharge, thereby improving the battery's discharge stability and reliability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the axial side structure of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the inner shell of this utility model;

[0019] Figure 4 This is a schematic diagram of the diaphragm layer of this utility model;

[0020] Figure 5This is a structural schematic diagram of the safety valve assembly of this utility model.

[0021] In the diagram: 1. Outer shell; 2. Inner shell; 3. Positive electrode cake; 4. Negative electrode zinc paste; 5. Diaphragm layer; 501. Outer layer; 502. Middle layer; 503. Inner layer; 6. Limited-use resistor; 7. Safety valve assembly; 701. Positioning cylinder; 702. Sealing block; 703. Spring; 8. Pressure relief hole; 9. Through hole; 10. Guide block; 11. Guide groove. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-5 This utility model provides a technical solution:

[0024] A silver oxide button battery with a defined resistance constant-resistance discharge includes a shell 1, an inner shell 2, a positive electrode cake 3, a negative electrode zinc paste 4, and a diaphragm layer 5. The shell 1 is fixedly connected to the outer wall of the inner shell 2. The positive electrode cake 3 is disposed at the top of the inner shell 2, the negative electrode zinc paste 4 is disposed at the bottom of the inner shell 2, and the diaphragm layer 5 is disposed inside the inner shell 2. The diaphragm layer 5 includes an outer layer 501, a middle layer 502 disposed inside the outer layer 501, and an inner layer 503 disposed inside the middle layer 502. A defined resistance 6 is disposed inside the inner cavity of the inner shell 2, and a defined resistance 6 is disposed on the outer wall of the inner shell 2. Several safety valve components 7 and positive electrode cake 3 use granulated silver oxide as positive electrode powder material. The mixing ratio of granulated silver oxide with electrolytic manganese dioxide and graphite is adjusted to 5:3:2 (mass ratio) to improve the utilization rate of positive electrode active material. This utility model uses granulated silver oxide as the main component of positive electrode powder material. The granulated silver oxide particles have high porosity, which is conducive to the transfer of electrolyte, thereby improving the discharge performance of the battery. At the same time, granulated silver oxide can also reduce the stirring time of positive electrode powder material in the manufacturing process and improve production efficiency.

[0025] Furthermore, the outer layer 501 is set as a protective film, the middle layer 502 is set as a polyethylene-acrylic acid grafted film, the end of the middle layer 502 is in contact with the positive electrode cake 3, the inner layer 503 is set as cellophane, and the end of the inner layer 503 is in contact with the negative electrode zinc paste 4. This utility model simplifies the four-layer separator structure of ordinary silver oxide button battery to three layers. This three-layer separator structure effectively reduces the internal resistance of the battery, which is beneficial to the discharge of the battery in the high voltage area and increases the discharge time. In order to meet the requirements of constant resistance discharge of battery in specific application scenarios;

[0026] The safety valve assembly 7 includes a positioning cylinder 701, which is fixedly embedded in the outer wall of the inner shell 2. A sealing block 702 is slidably connected inside the positioning cylinder 701. A spring 703 is fixedly connected to one side of the sealing block 702. One end of the spring 703 is fixedly connected to one side of the inner wall of the positioning cylinder 701. One end of the positioning cylinder 701 is open and communicates with the inner cavity of the inner shell 2.

[0027] Two sets of pressure relief holes 8 are provided on the outer wall of the positioning cylinder 701. The pressure relief holes 8 are connected to the inner cavity of the outer shell 1. When the pressure in the inner cavity of the inner shell 2 is too high, it can exert a squeezing force on the sealing block 702. At this time, the sealing block 702 slides towards the inside of the positioning cylinder 701. At this time, the spring 703 is in a compressed state until the sealing block 702 exceeds the pressure relief hole 8. At this time, the external environment is connected to the inner cavity of the inner shell 2 through the pressure relief hole 8, thereby achieving the effect of releasing pressure. After the pressure is restored, the sealing block 702 returns to its position.

[0028] The bottom of the outer casing 1 has several sets of through holes 9 arranged in a ring array. The pressure released inside the inner casing 2 is discharged to the outside through the through holes 9 to prevent the button battery from exploding or leaking, thereby improving the safety of the battery.

[0029] A guide block 10 is fixedly connected to the top of the sealing block 702. A guide groove 11 adapted to the guide block 10 is provided on the inner wall of the positioning cylinder 701. The guide block 10 is slidably connected inside the guide groove 11. By setting the guide block 10 and the guide groove 11 to cooperate, the sealing block 702 is limited, preventing the sealing block 702 from shifting or rotating. At the same time, it helps to improve the stability of the sealing block 702 during movement.

[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 limited special resistance constant resistance discharge silver oxide button cell comprising a case (1), an inner case (2), a positive electrode cake (3), a negative electrode zinc paste (4), and a diaphragm layer (5), characterized in that: The outer shell (1) is fixedly connected to the outer wall of the inner shell (2). The positive electrode cake (3) is disposed on the top of the inner shell (2). The negative electrode zinc paste (4) is disposed on the bottom of the inner shell (2). The diaphragm layer (5) is disposed inside the inner shell (2). The diaphragm layer (5) includes an outer layer (501). A middle layer (502) is disposed inside the outer layer (501). An inner layer (503) is disposed inside the middle layer (502). A dedicated resistor (6) is disposed in the inner cavity of the inner shell (2). Several safety valve assemblies (7) are disposed on the outer wall of the inner shell (2). The positive electrode cake (3) uses granulated silver oxide as the positive electrode powder material.

2. A limited special resistance constant resistance discharge button cell silver oxide button cell as defined in claim 1, characterized in that: The outer layer (501) is configured as a protective film, the middle layer (502) is configured as a polyethylene-acrylic acid grafted film, and the end of the middle layer (502) is in contact with the positive electrode cake (3).

3. The defined special resistance constant-resistance discharge silver oxide button cell of claim 1, wherein: The inner layer (503) is made of cellophane, and the end of the inner layer (503) is in contact with the negative electrode zinc paste (4).

4. The defined special resistance constant-resistance discharge silver oxide button cell of claim 1, wherein: The safety valve assembly (7) includes a positioning cylinder (701), which is fixedly embedded in the outer wall of the inner shell (2). A sealing block (702) is slidably connected inside the positioning cylinder (701). A spring (703) is fixedly connected to one side of the sealing block (702), and one end of the spring (703) is fixedly connected to one side of the inner wall of the positioning cylinder (701).

5. A limited special resistance constant resistance discharge button cell silver oxide button cell as defined in claim 4, characterized by: One end of the positioning cylinder (701) is open, and the open end of the positioning cylinder (701) is connected to the inner cavity of the inner shell (2).

6. A limited special resistance constant resistance discharge button cell silver oxide button cell as defined in claim 5, characterized by: Two sets of pressure relief holes (8) are provided on the outer wall of the positioning cylinder (701), and the pressure relief holes (8) are connected to the inner cavity of the outer shell (1).

7. A limited special resistance constant resistance discharge button cell silver oxide button cell as defined in claim 6, characterized by: The bottom of the outer shell (1) is provided with several sets of through holes (9), and the several sets of through holes (9) are arranged in a ring array.

8. A limited special resistance constant resistance discharge oxide silver button cell as defined in claim 7, characterized by: The top of the sealing block (702) is fixedly connected to a guide block (10), and the inner wall of the positioning cylinder (701) is provided with a guide groove (11) that is compatible with the guide block (10). The guide block (10) is slidably connected to the inside of the guide groove (11).

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