With the progress of science and technology and the popularization of portable electronic devices, the application scope of portable sealed batteries is continuously expanding. This kind of battery has become an important part of many electronic products due to its advantages of portability and recharging. However, the safety of batteries has always been the focus of consumers and manufacturers. Therefore, China has formulated GB/T 28164-2011 standard to ensure the safety of portable sealed batteries and a galvanic battery containing alkaline or other non-acidic electrolyte during use.

I. Overview of standards

GB/T 28164-2011 is a national standard for the safety requirements of portable sealed batteries and a galvanic battery containing alkaline or other non-acidic electrolyte. This standard aims to ensure the safety of consumers and the reliability of products by standardizing the safety during the design, manufacture and use of batteries. The standard covers the structural design, electrical performance, thermal stability, mechanical performance and other aspects of the battery, providing a unified safety assessment basis for the industry.

II. Scope of Application

GB/T 28164-2011 is suitable for portable sealed batteries and a galvanic battery, especially those batteries containing alkaline or other non-acidic electrolyte. This standard is not only applicable to the production of new products, but also applicable to the improvement and detection of existing products. Both manufacturers, suppliers and users can evaluate the safety of battery products according to this standard.

III. Security requirements

1. Structural design

in terms of structural design, GB/T 28164-2011 requires that the shell of the battery must have sufficient strength and toughness to resist external impact and pressure. The sealing design of the battery should ensure that the electrolyte does not leak and avoid causing harm to the environment and users. At the same time, the design of the battery should also consider the problem of heat dissipation to prevent potential safety hazards caused by overheating.

2. Electrical performance

battery the electrical performance is one of the important indicators of safety. GB/T 28164-2011 specifies the test methods and standards for electrical parameters such as charge and discharge performance, resistance and capacity of the battery. The performance of the battery under normal use and extreme conditions (such as high temperature, low temperature, etc.) must meet the standard requirements to ensure the safety in various use environments.

3. Thermal stability

thermal stability is one of the important factors to measure the safety of battery. According to GB/T 28164-2011, the battery must maintain good performance under extreme conditions such as high temperature, low temperature and sudden temperature change to prevent battery expansion caused by temperature change, safety accidents such as leakage or explosion. The standard requires a thermal cycle test on the battery to evaluate its thermal stability.

4. Mechanical properties

the battery may suffer various mechanical impacts during transportation and use, so its mechanical properties must meet certain standards. GB/T 28164-2011 requires that the structure and performance of the battery should be stable under different mechanical stress (such as vibration, impact, etc.) conditions., no damage or leakage occurs.

5. Electrolyte Safety

the standard also emphasizes the safety requirements of electrolyte. For batteries containing alkaline or other non-acidic electrolyte, it must be ensured that the chemical properties of electrolyte will not cause harm to users. In the process of battery use and treatment, if leakage occurs, the corrosion and toxicity of electrolyte must meet relevant safety standards to reduce risks to people and the environment.

IV. Test methods

in order to ensure the safety of portable sealed battery, GB/T 28164-2011 stipulates a series of test methods. These test methods cover all aspects of the battery, including:

• mechanical performance test: conduct drop, shock and vibration tests on the battery to evaluate its structural integrity under extreme conditions.
• Electrical Performance Test: Measure the charging and discharging efficiency, internal resistance, capacity and other parameters of the battery to ensure its performance under normal working conditions.
• Thermal stability test: test the performance of the battery in high and low temperature environment through thermal cycle test to ensure its safety.

Through a series of tests, manufacturers can verify whether the products meet the safety requirements of GB/T 28164-2011, thus ensuring the safety of consumers during use.

GB/T 28164-2011 Standard provides comprehensive specifications and guidance for the safety of portable sealed batteries and a galvanic battery. Through strict requirements on structural design, electrical performance, thermal stability and mechanical performance, this standard effectively reduces the safety risks during battery use and protects the safety of consumers' lives and property.