The standards for lithium-ion batteries for power energy storage mainly include GB/T 36276-2023 "Lithium-ion batteries for power energy storage" and "Lithium-ion battery industry specifications (2024)" issued by the Ministry of Industry and Information Technology. The following is a detailed summary of these two standards:
GB/T 36276-2023 Electric Energy Storage with Lithium-ion Battery
scope of application: This standard is applicable to the design, manufacture, testing, testing, operation, maintenance and overhaul of lithium-ion batteries for power energy storage. It covers battery cells, battery modules and battery clusters, and provides comprehensive technical requirements and test methods.
key features:
comprehensiveness: from the battery cell to the system integration are detailed provisions.
Stringency: More stringent in technical conditions and test requirements to ensure the safety and reliability of the battery.
Scientific: scientific methods and means are used for testing and evaluation to ensure the accuracy and reliability of test results.
Forward-looking: increased the battery power characteristics, liquid cooling management performance and other aspects of the test requirements to meet the development needs of the industry.
Practicability: It provides clear testing guidelines and transportation and storage requirements to ensure the safety and reliability of the battery in all aspects.
key Requirements:
appearance, size and quality: The appearance, size and quality of the battery are specified in detail.
Electrical properties: including initial charge and discharge energy, rate charge and discharge performance, high temperature and low temperature charge and discharge performance.
Environmental adaptability: The battery is required to maintain good performance under different environmental conditions (such as high temperature, low temperature, low pressure, etc.).
Durability: The durability of the battery was evaluated by a cycle performance test.
Safety performance: including overcharge and overdischarge test, short circuit test, extrusion test, drop test, thermal runaway test, etc., to ensure the safety of the battery under various extreme conditions.
Lithium-ion Battery Industry Specifications (2024)
scope of application: The specification is applicable to the lithium-ion battery industry, including consumer batteries, power batteries and energy storage batteries. Among them, energy storage batteries mainly refer to lithium-ion batteries used in household energy storage, industrial and commercial energy storage, new energy energy storage and other fields.
main requirements:
R & D and process improvement expenses: The annual expenses for R & D and process improvement shall not be less than 3% of the main business income.
Product quality and technical requirements: the energy density of energy storage type battery monomer shall be ≥ 155Wh/kg, and the energy density of battery pack shall be ≥ 110Wh/kg. Single battery cycle life ≥ 6000 times and capacity retention rate ≥ 80%, battery cycle life ≥ 5000 times and capacity retention rate ≥ 80%.
Green factory construction: encourage enterprises to create green factories, strengthen environmental protection and sustainable development.
Emergency response capacity building: Enterprises should formulate accident emergency plans and conduct regular drills, build a professional accident handling team, and be equipped with personnel and equipment suitable for the scale of the enterprise.
other requirements:
technological innovation: guide enterprises to reduce the simple expansion of production capacity of manufacturing projects, strengthen technological innovation.
Intellectual property rights: enterprises are encouraged to own patents for technological inventions of major products.
Output requirements: the actual output of the previous year at the time of declaration shall not be less than 50% of the actual production capacity of the same year.
Energy consumption standard: the comprehensive energy consumption per unit product of lithium-ion battery production enterprise shall be ≤ 400kgce/million Ah.
These two standards together constitute the power storage with lithium-ion battery complete specification system, for battery manufacturers to provide clear technical guidance and requirements, but also for the power storage system safe and reliable operation to provide a strong guarantee.