T/CI 067-2022 Universal technical specifications for dual-ion batteries

Scope

Scope: This document specifies the specifications, technical requirements, inspection and testing items, marking, packaging, transportation, and storage of dual-ion batteries and battery modules. This document is applicable to dual-ion batteries and battery modules used in communication base stations and energy storage, dual-ion batteries and battery modules for 3C products, dual-ion batteries and battery modules for electric balance bikes/scooters/passenger vehicles, as well as dual-ion batteries and battery modules in other application scenarios; Main technical content: - Dual-ion battery: A secondary battery in which anions and cations in the electrolyte react electrochemically with the positive and negative electrodes during charging and discharging. - 3.2 Single cell: Composed of an electrode, a separator, an electrolyte, and a packaging material, it constitutes the smallest unit of a battery module and is an electrochemical device that stores electrical energy obtained in the form of chemical energy and converts chemical energy into electrical energy. - 3.3 Battery module: A multi-cell battery composed of two or more single cells connected in series or parallel. - 3.4 Battery management system (BMS): An intelligent management and maintenance system for individual battery units, preventing overcharging and overdischarging of batteries, extending battery lifespan, monitoring battery status (temperature, voltage, current, state of charge, etc.), and providing a communication interface and protection for the battery. - 3.5 Battery pack: A unified whole formed by several battery modules controlled or managed by a battery management system and a thermal management system. - 3.6 Rated capacity: The capacity C2 (Ah) discharged at I2 (A) current when the battery is fully charged at room temperature and reaches the termination voltage. - 3.7 Nominal voltage: An approximate value used to represent the average voltage of a battery pack, expressed in volts (V). - 3.8 Charg

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