T/CI 391-2024 Heavy-duty commercial vehicle onboard low-voltage lithium-ion battery starter power system

Scope

Scope: This document specifies the technical requirements, test conditions, test specifications, inspection rules, and marking, packaging, transportation, and storage for the start-up power supply system of low-voltage lithium-ion batteries installed in heavy-duty commercial vehicles (hereinafter referred to as the lithium battery system). This document applies to commercial vehicles with a system voltage not exceeding 24V and a low-voltage lithium-ion battery start-up power supply system installed in them. Note: This type of lithium battery system is primarily designed to meet the needs of engine starting for internal combustion engines, pure electric vehicles, and hybrid vehicles, while also providing power for certain loads. Main technical content: Within the scope of this standard, the hazards posed by the start-up power supply system of low-voltage lithium-ion batteries installed in heavy-duty commercial vehicles include: leakage, which may lead to high voltage in the battery system and insulation failure, indirectly causing electric shocks to personnel; fire, which can directly burn human bodies; explosion, which directly endangers human safety, including high-temperature burns, shock wave injuries, and damage from explosive fragments; and electric shocks, which result from current flowing through the human body. The safety of the start-up power supply system of low-voltage lithium-ion batteries installed in heavy-duty commercial vehicles is related to the selection of materials, design, and operating conditions. The operating conditions include normal use conditions, foreseeable misuse conditions, and foreseeable failure conditions, as well as environmental factors such as temperature and altitude that affect its safety.

Development Information

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