Button cell capable of preventing liquid leakage
By designing a retaining ring, rubber pad, buffer block, and vent holes on the button battery, the problems of damage and leakage when the button battery is bumped or dropped are solved, improving the battery's usability and lifespan, and enhancing its performance and output power.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN M&LAK IND CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-05-01
AI Technical Summary
Button batteries are easily damaged or leak when bumped or dropped, leading to battery failure and corrosion of electronic components, affecting performance and the lifespan of electronic products.
The structure is designed with a fixing ring, rubber pad, buffer block, vent, positive electrode waterproof layer and positive electrode catalyst layer to prevent damage from bumps and drops, prevent electrolyte leakage, and allow oxygen to be discharged through the vent, thereby reducing resistance and improving battery performance.
It effectively protects button batteries from impacts and drops, prevents leakage, improves battery usability and lifespan, and reduces resistance to enhance battery performance and output power.
Smart Images

Figure CN224191036U_ABST
Abstract
Description
A leak-proof button battery Technical Field
[0001] This utility model relates to the field of button battery technology, and in particular to a leak-proof button battery. Background Technology
[0002] Button batteries are widely used in various small electronic products, such as watches, calculators, and electronic toys, due to their small size. However, during the use and storage of button batteries, they are often accidentally bumped or dropped. Once this happens, the surface of the button battery is easily damaged, and it may even cause the battery to leak directly. Battery leakage will not only cause the battery itself to fail, but may also corrode the electronic components it contacts, causing damage to the electronic product and greatly affecting the performance of the button battery and the lifespan of the electronic product.
[0003] Regarding the above-mentioned and existing related technologies, the inventor believes that the following defects often exist: The button battery body is prone to surface damage or direct leakage due to accidental bumps and drops during placement. Battery leakage not only causes the battery itself to fail but may also corrode electronic components in contact with it, causing damage to electronic products and greatly affecting the performance of the button battery and the lifespan of electronic products. Therefore, to address the above problems, an anti-leakage button battery is proposed. Summary of the Invention
[0004] The purpose of this utility model is to solve the shortcomings of the existing technology, which is to prevent the button battery body from being damaged by accidental bumps and drops, or the button battery body from leaking directly. Battery leakage not only causes the battery itself to fail, but may also corrode the electronic components in contact with it, causing damage to electronic products, which greatly affects the performance of the button battery and the service life of electronic products. Therefore, a leak-proof button battery is proposed.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a leak-proof button battery, comprising a button battery body, a fixing ring fixedly connected to the surface of the button battery body, a plurality of rubber pads fixedly connected to the surface of the fixing ring, and a circular ring fixedly connected to the surface of the rubber pads.
[0006] The aforementioned components achieve the following effect: they protect the button battery body, preventing surface damage or direct leakage caused by accidental bumps or drops. Battery leakage not only causes the battery itself to fail but may also corrode electronic components in contact with it, damaging electronic products and greatly affecting the performance of the button battery and the lifespan of electronic products, thus improving the usability of the device.
[0007] Preferably, the surface of the ring is provided with a fixing groove, and a buffer block is fixedly connected to the inner wall of the fixing groove.
[0008] The effect achieved by the above components is that, through the cooperation of the fixing groove and the buffer block, the pressure of falling can be buffered to protect the button battery body when it falls.
[0009] Preferably, the surface of the button battery body is provided with vent holes.
[0010] The effect achieved by the above components is as follows: During battery discharge, the positive electrode undergoes an oxidation reaction, releasing oxygen. If this oxygen cannot be discharged in time, it will lead to an increase in the internal pressure of the battery, which may cause safety problems. The vent provides a channel for oxygen to escape smoothly.
[0011] Preferably, the inner cavity of the button battery body is provided with a circular block, the circular block is fixedly connected to the button battery body, the surface of the circular block is provided with a sliding groove, and the inner wall of the sliding groove is fixedly connected with a current collecting mesh.
[0012] The effect achieved by the above components is that the current collector of the button battery concentrates the current in the battery cell or battery pack onto conductive components such as copper rods or copper foils, reducing the internal resistance of the battery and thus improving the battery's performance and efficiency.
[0013] Preferably, a positive waterproof layer is fixedly connected to the surface of the circular block.
[0014] The effect achieved by the above components is to prevent electrolyte leakage, which may lead to a decrease in battery performance and damage to the surrounding environment and equipment. Effectively preventing electrolyte leakage is the solution.
[0015] Preferably, a positive electrode catalyst layer is fixedly connected to the surface of the positive electrode waterproof layer.
[0016] The effect achieved by the above components is that by accelerating the electrochemical reaction, the positive electrode catalyst layer enables the battery to convert chemical energy into electrical energy more efficiently, which not only improves the battery's output power but also extends the battery's lifespan.
[0017] In summary, the beneficial effects of this utility model are as follows:
[0018] 1. This utility model achieves the effect of protecting the button battery body, avoiding surface damage or direct leakage of the button battery body due to accidental bumps and drops during placement. Battery leakage not only causes the battery itself to fail, but may also corrode the electronic components in contact with it, causing damage to electronic products. This greatly affects the performance of the button battery and the service life of electronic products, thus improving the usability of the device. Attached Figure Description
[0019] Figure 1 is a three-dimensional structural diagram of this utility model;
[0020] Figure 2 is a schematic diagram of the structure of the fixing ring in this utility model;
[0021] Figure 3 is a schematic diagram of the air vent in this utility model;
[0022] Figure 4 is a cross-sectional view of the main body of the button battery in this utility model.
[0023] Legend: 1. Button battery body; 2. Fixing ring; 3. Rubber pad; 4. Circular ring; 5. Fixing groove; 6. Buffer block; 7. Vent hole; 8. Circular block; 9. Slide groove; 10. Current collector; 11. Positive electrode waterproof layer; 12. Positive electrode catalyst layer. Detailed Implementation
[0024] Referring to Figures 1-4, this utility model provides a technical solution: a leak-proof button battery, comprising a button battery body 1, a fixing ring 2 fixedly connected to the surface of the button battery body 1, a plurality of rubber pads 3 fixedly connected to the surface of the fixing ring 2, and a circular ring 4 fixedly connected to the surface of the rubber pads 3. This achieves the effect of protecting the button battery body 1, avoiding surface damage or direct leakage of the button battery body 1 due to accidental bumps or drops during placement, thus improving the usability of the device. A fixing groove 5 is provided on the surface of the circular ring 4, and a buffer block 6 is fixedly connected to the inner wall of the fixing groove 5. Through the cooperation of the fixing groove 5 and the buffer block 6, the pressure of falling can be buffered to prevent the button battery body 1 from falling, thus protecting the button battery body 1. The button battery body 1 has a vent hole 7 on its surface. During the battery discharge process, the positive electrode will undergo an oxidation reaction and release oxygen. If this oxygen cannot be discharged in time, it will cause the internal pressure of the battery to increase, which may cause safety problems. The vent hole 7 provides a channel for oxygen to escape smoothly. The inner cavity of the button battery body 1 has a round block 8, which is fixedly connected to the button battery body 1. The surface of the round block 8 has a groove 9, and the inner wall of the groove 9 is fixedly connected to a current collector 10. The current collector 10 of the button battery body 1 concentrates the current in the battery cell or battery pack onto conductive components such as copper rods or copper foil, reducing the internal resistance of the battery and thus improving the battery's performance and efficiency. A positive electrode waterproof layer 11 is fixedly connected to the surface of the round block 8 to prevent electrolyte leakage. Electrolyte leakage may lead to a decrease in battery performance and damage to the surrounding environment and equipment. Effectively preventing electrolyte leakage is crucial. A positive electrode catalyst layer 12 is fixedly connected to the surface of the positive electrode waterproof layer 11. By accelerating the electrochemical reaction, the positive electrode catalyst layer 12 enables the battery to more effectively convert chemical energy into electrical energy. This not only improves the battery's output power but also extends the battery's lifespan.
[0025] Working principle: When a worker drops the button battery body 1 onto the ground, the ground first contacts the buffer block 6, which absorbs most of the impact force. The buffer block 6 then moves the ring 4, which in turn moves several rubber pads 3, which absorb the remaining impact force. This ensures that the button battery body 1 does not leak due to the drop. When the worker uses the battery, the button battery body 1 accelerates the electrochemical reaction through the positive electrode catalyst layer 12. The positive electrode catalyst layer 12 enables the battery to more effectively convert chemical energy into electrical energy, which not only improves the battery's output power but also extends its lifespan. The positive electrode prevents leakage. The water layer 11 prevents electrolyte leakage, which can lead to a decrease in battery performance and damage to the surrounding environment and equipment. It effectively prevents electrolyte leakage. The current collector 10 concentrates the current in the battery cell or battery pack onto conductive components such as copper rods or copper foil, reducing the internal resistance of the battery and improving its performance and efficiency. The vent 7 provides a channel for oxygen to escape smoothly during battery discharge, which improves the efficiency and lifespan of the button battery body 1.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
Claims
1. A leak-proof button battery, comprising a button battery body (1), characterized in that: A fixing ring (2) is fixedly connected to the surface of the button battery body (1), and several rubber pads (3) are fixedly connected to the surface of the fixing ring (2), and a circular ring (4) is fixedly connected to the surface of the rubber pads (3).
2. The liquid leakage resistant button cell battery of claim 1, wherein: The surface of the ring (4) is provided with a fixing groove (5), and a buffer block (6) is fixedly connected to the inner wall of the fixing groove (5).
3. The leak-proof button battery according to claim 1, characterized in that: The button battery body (1) has ventilation holes (7) on its surface.
4. A leak-proof button battery according to claim 1, characterized in that: The inner cavity of the button battery body (1) is provided with a round block (8), the round block (8) is fixedly connected to the button battery body (1), the surface of the round block (8) is provided with a groove (9), and the inner wall of the groove (9) is fixedly connected with a current collector (10).
5. A leak-proof button battery according to claim 1, characterized in that: The surface of the circular block (8) is fixedly connected to a positive waterproof layer (11).
6. A leak-proof button battery according to claim 1, characterized in that: A positive electrode catalytic layer (12) is fixedly connected to the surface of the positive electrode waterproof layer (11).