gb7099

gb7099
1. Introduction
gb7099 is a safety standard for lithium-ion batteries in electric vehicles. It is applicable to battery packs and systems used by electric vehicles for road transportation. This document provides an overview of gb7099 and its key requirements.
2. Scope
The gb7099 standard covers safety requirements for lithium-ion battery packs and systems used in electric vehicles. It focuses on preventing hazards that may arise from battery failure, including thermal runaway, explosion, and fire.
3. Key Requirements
3.1 Battery Pack Design
•Battery packs shall be designed with adequate mechanical strength and rigidity to withstand normal vehicle operation and potential crash
scenarios.
•The battery pack shall have sufficient ventilation to dissipate heat and prevent the accumulation of explosive gases.
•The battery pack shall have a robust housing to protect the cells from external impact and damage.
3.2 Cell Level Safety
•Lithium-ion cells used in battery packs shall comply with recognized safety standards and be free from defects.
•Cells shall have built-in protections to prevent overcharging, over-discharging, and short-circuiting.
•Each cell shall be thermally and mechanically isolated from adjacent cells to prevent propagation of thermal runaway.
3.3 Battery Management System (BMS)
• A BMS shall be implemented to monitor the state of charge, temperature, voltage, and current of the battery pack.
•The BMS shall provide protection functions to prevent overcharging, over-discharging, and over-temperature conditions.
•An effective battery balancing mechanism shall be utilized to ensure uniform cell voltage levels.
3.4 Safety Testing and Certification
•Battery packs shall undergo various safety tests, including electrical, mechanical, and environmental tests, to ensure compliance with gb7099.
•Manufacturers shall obtain the necessary certifications to demonstrate compliance with gb7099.
•Periodic inspections and testing shall be conducted to ensure continued compliance.
4. Compliance and Enforcement
•Compliance with gb7099 is mandatory for all battery packs used in electric vehicles in China.
•Manufacturers are responsible for verifying compliance and ensuring that their products meet the requirements.
•Regulatory authorities have the power to conduct inspections and audits to enforce compliance with gb7099.
5. Conclusion
The gb7099 standard plays a crucial role in ensuring the safety and reliability of lithium-ion batteries used in electric vehicles. It provides comprehensive guidelines for battery pack design, cell safety, battery management systems, and testing requirements. Compliance with gb7099 is mandatory and helps to mitigate the potential hazards associated with lithium-ion batteries.
For the detailed requirements and specifications, it is recommended to refer to the official gb7099 standard documentation.。