Limited special resistor constant resistance discharge silver oxide button cell

By adopting granulated silver oxide and a three-layer separator structure, the problems of insufficient porosity and high internal resistance of silver oxide button batteries are solved, achieving high-efficiency discharge and stability of the battery, and meeting the requirements of constant resistance discharge for medical equipment and other applications.

CN224153371UActive Publication Date: 2026-04-21DONGGUAN SHENGLI BATTERIES IND CO LTD
0 Cites 0 Cited by

Patent Information

Application Number
CN202520789331.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-24
Publication Date
2026-04-21
Estimated Expiration
2035-04-24

AI Technical Summary

Technical Problem

Existing silver oxide button batteries suffer from insufficient porosity of silver oxide particles and low electrolyte transfer efficiency during manufacturing. This results in poor discharge performance, high internal resistance, and large voltage fluctuations in the high-voltage region, making it impossible to maintain constant resistance during discharge. This affects the battery's performance and stability, especially in medical devices that require constant resistance discharge.

Method used

Granulated silver oxide is used as the positive electrode powder material, and the four-layer separator structure is simplified to three layers, including a protective film, a polyethylene-acrylic grafted film and cellophane. A dedicated resistor is installed inside, and a safety valve assembly is set to release pressure, reduce internal resistance and maintain constant resistance.

Benefits of technology

It improves electrolyte transfer efficiency, reduces manufacturing time, enhances discharge performance and stability, meets the constant resistance discharge requirements of batteries in specific application scenarios, and improves battery safety and reliability.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art