The national standard has established conventional performance and functional requirements for power battery systems - capacity, energy, power, efficiency, standard cycle life, operating cycle life, storage, charge retention, capacity recovery, rate performance, high and low temperature performance, etc. Safety requirements - operational safety, fault protection, personnel protection against electric shock, abuse protection, environmental adaptability, accident protection, user manuals and special instructions, covering batteries, modules, power battery packs, power battery systems The four levels, product types including hybrid, plug-in/extended hybrids, pure electric passenger cars and commercial vehicles, have basically formed a complete system.
I. Building a Standard System <br> In the early development of electric vehicles, the lack of GB or GB/T national standards caused the industry to be mixed and mixed. Relying only on the QC/T recommendation standard of the automotive industry as a reference, it is not authoritative and extensive. Vehicle manufacturers and battery companies either have no clue or do their own work, and each lacks a unified measurement standard.
With the release of the new GB/T national recommendation standards in 2015, China's electric vehicle industry has basically built a complete standard system around the power battery system, forming a threshold for the industry, which is conducive to the standard development of the industry and the survival of the fittest.
The new national standard was promulgated in May 2015 (some standards will be promulgated in October or at the end of the year), and there is a one-year transition period from the old standard. Starting from 2016, relevant companies will follow the new standards for related testing. Together with the “Regulations on Automotive Power Battery Industry Standards†issued by the Ministry of Industry and Information Technology in March 2015, the new national standard will accelerate the reshuffle of the power battery industry and increase the level of industry concentration.
In another article of my own, I have discussed the safety protection of power battery systems mainly in how to prevent the danger caused by the abnormal release of electrical energy and chemical energy. For details, please refer to the article "Safety Analysis and Protection Design of Power Battery System". . The new version of the national standard has a strict regulation on the protection of electrical energy and chemical energy, and has clarified the test specifications and formed a relatively complete system. From this aspect, the product safety design and the national standard inspection requirements have the same goal.
This article will systematically discuss the contents of various standards, compare the differences between the new standards and the old standards, and hope to provide some help for the understanding and application of standards for the power battery companies or the whole vehicle companies.
I. Building a Standard System <br> In the early development of electric vehicles, the lack of GB or GB/T national standards caused the industry to be mixed and mixed. Relying only on the QC/T recommendation standard of the automotive industry as a reference, it is not authoritative and extensive. Vehicle manufacturers and battery companies either have no clue or do their own work, and each lacks a unified measurement standard.
With the release of the new GB/T national recommendation standards in 2015, China's electric vehicle industry has basically built a complete standard system around the power battery system, forming a threshold for the industry, which is conducive to the standard development of the industry and the survival of the fittest.
The new national standard was promulgated in May 2015 (some standards will be promulgated in October or at the end of the year), and there is a one-year transition period from the old standard. Starting from 2016, relevant companies will follow the new standards for related testing. Together with the “Regulations on Automotive Power Battery Industry Standards†issued by the Ministry of Industry and Information Technology in March 2015, the new national standard will accelerate the reshuffle of the power battery industry and increase the level of industry concentration.
| Serial number | new standard | Old standard |
| 1 | GB/T 31484-2015 Cycle life requirements and test methods for power batteries for electric vehicles | QC/T 743-2006 Lithium Ion Battery for Electric Vehicles |
| 2 | GB/T 31485-2015 Safety requirements and test methods for power batteries for electric vehicles | QC/T 743-2006 Lithium Ion Battery for Electric Vehicles |
| 3 | GB/T 31486-2015 Electrical performance requirements and test methods for electric vehicles | QC/T 743-2006 Lithium Ion Battery for Electric Vehicles |
| 4 | GB/T 31467.1-2015 Lithium-ion power battery packs and systems for electric vehicles - Part 1 | \ |
| 5 | GB/T 31467.2-2015 Lithium-ion power battery packs and systems for electric vehicles - Part 2: Test procedures for high-energy applications | \ |
| 6 | GB/T 31467.3-2015 Lithium-ion power battery packs and systems for electric vehicles - Part 3: Safety requirements and test methods | \ |
| 7 | GB/T 18384.1—2015 Electric vehicles Safety requirements Part 1: Vehicle-mounted rechargeable energy storage systems | GB/T 18384.1—2001 Electric vehicles Safety requirements Part 1: Vehicle energy storage devices |
| 8 | GB/T 18384.2—2015 Electric vehicles Safety requirements Part 2: Operational safety and fault protection | GB/T 18384.2—2001 Electric vehicles Safety requirements Part 2: Functional safety and fault protection |
| 9 | GB/T 18384.3—2015 Electric vehicles Safety requirements Part 3: Protection against electric shock | GB/T 18384.3—2001 Electric vehicles Safety requirements Part 3: Protection against electric shock |
| 10 | \ | QC/T 897-2011 Technical requirements for battery management systems for electric vehicles |
| standard | Protection target | Level |
| GB/T 31485 | chemical energy | Monomer/module |
| GB/T 31467 | chemical energy | system |
| GB/T 18384 | Electric energy | system |
| GB/T 18387 | Electromagnetic energy | Complete vehicle (covering battery system) |
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