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I. System Design and Construction

The design and structure of LIBESS (Lithium-Ion Electrochemical Energy Storage System) must be capable of preventing internal short circuits, combustion, or explosions within the battery. Therefore, the IEC 62933-5-4 standard stipulates the design and construction requirements for LIBESS, including the dimensions, shape, materials, and connection methods of battery modules. In addition, it is required that LIBESS must have safety protection measures such as overvoltage protection, overcurrent protection, and overtemperature protection.

II. Electrical Safety

The IEC 62933-5-4 standard requires the electrical safety of LIBESS under both normal operating conditions and abnormal situations. Specifically, it requires that LIBESS must possess characteristics such as electrical isolation, grounding protection, and reliable electrical connections. Additionally, it is required that LIBESS must have battery status monitoring and control functions to ensure the safety performance of the battery.

III. Thermal Safety

The IEC 62933-5-4 standard requires the safety of LIBESS under thermal abuse conditions, such as high temperatures or overcharging. To this end, it is required that LIBESS must have safety protection measures such as overtemperature protection and overcharge protection. In addition, it is required that LIBESS must have a thermal management system to ensure that the battery temperature is controlled within a safe range.

IV. Mechanical Safety

The IEC 62933-5-4 standard requires the safety of LIBESS when subjected to external impacts or vibrations. To this end, it is required that LIBESS must have safety protection measures such as mechanical protection and preventive measures. Additionally, it is required that LIBESS must have mechanical strength and stability to ensure the safety performance of the battery.

V. Chemical Safety

The IEC 62933-5-4 standard requires that the chemical substances in LIBESS do not leak or generate harmful gases. To this end, it is required that LIBESS must have safety protection measures such as chemical stability and sealing. Additionally, it is required that LIBESS must have chemical substance monitoring and control functions to ensure the safety performance of the battery.

VI. Charging and Discharging

The IEC 62933-5-4 standard stipulates the charging and discharging conditions of LIBESS to ensure its safety performance. Specifically, it is required that LIBESS must have charging and discharging control functions to ensure that the charging and discharging processes of the battery are within a safe range. Additionally, it is required that LIBESS must have charging and discharging state monitoring and control functions to ensure the safety performance of the battery.

VII. Identification and Instructions

The IEC 62933-5-4 standard requires clear identification and instructions on LIBESS so that users can understand how to use and maintain it safely. Specifically, it is required that LIBESS must have identification and instructions, including battery model, rated voltage, rated capacity, charging and discharging conditions, and instructions for safe use and maintenance.

VIII. Testing and Evaluation

The IEC 62933-5-4 standard provides a series of testing methods to evaluate the safety performance of LIBESS. Specifically, it includes electrical performance testing, thermal performance testing, mechanical performance testing, and chemical performance testing of the battery. Additionally, it is required that LIBESS must undergo safety performance evaluation to ensure that it complies with the standard requirements.

In conclusion, the IEC 62933-5-4 standard is formulated to ensure the safety of lithium-ion electrochemical energy storage systems. It covers all aspects from design, manufacturing to use and maintenance. Adhering to this standard can help reduce the safety risks of LIBESS and protect people's lives and property.

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