The most popular multiple national standards coord

2022-07-25
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At the beginning of this year, the general office of the State Council issued the implementation plan of the extended producer system to implement the extended producer system, extending the resources and environment undertaken by producers for their products from the production link to the whole life cycle of product design, circulation and consumption, recycling and waste disposal, Power battery recycling of new energy vehicles is one of the important contents

however, it is not so simple to implement the extended production system, and the power battery recycling is very much like a popular literary film. The root cause lies in the small scale of retired power batteries and the fact that it is difficult to trace the historical information of batteries in the process of echelon utilization, disassembly and recycling. Therefore, it is urgent to implement the coding system and provide power batteries with an "ID card" to solve the problem of power battery recycling

on August 4, three national standards, gb/t coding rules for automotive power batteries, gb/t recycling of automotive power batteries - residual energy detection, and gb/t compared with traditional similar products, 17 product specifications and dimensions of power batteries for electric vehicles, were issued, In addition to the previously issued gb/t specifications for recycling and disassembly of automotive power batteries (hereinafter referred to as the four standards as coding rules, residual energy detection, specifications and dimensions and disassembly specifications), a relatively complete national standard system has been established in the field of power battery recycling, and the disorder of power battery recycling and echelon utilization is expected to change

basic standard information

file name: gb/t coding rules for automotive power batteries, gb/t recycling of automotive power batteries - residual energy detection

proposed by: Ministry of information and industrialization of the people's Republic of China

centralized unit: National Technical Committee for automotive Standardization (sac/tc114)

release date: July 12th, 2017

issued by: General Administration of quality supervision, inspection and Quarantine of the people's Republic of China, China National Standardization Administration

implementation time: February 1st, 2018

coding rules - power battery traceability management is strongly supported

this standard is jointly formulated by vehicle enterprises, battery system enterprises, battery enterprises, recycling enterprises, government agencies and industry experts, and is applicable to the traceability and management of the whole life cycle of automotive power battery products, such as production, sales, use, maintenance, recycling, cascade utilization and recycling

code object: automobile power battery pack (Group), battery module, single battery, power battery pack (Group), battery module and single battery for cascade utilization, and the codes of power battery pack (Group), battery module and single battery, power battery pack (Group) battery module for cascade utilization and energy consumption battery with a single reduction of 100million tons of standard coal shall be established

code structure: it is divided into two parts, namely, the first part of design information + the second part of production information. The two parts can be coded separately or combined. This structure code can also be used for echelon utilization of power battery products, but it needs to be coded again according to the coding rules, and the code of prime power battery products needs to be retained

There are many ways to express the code structure, including manufacturer code, product type code, battery type code, specification code, traceability information code, serial number and cascade utilization code

in the past, due to the lack of a unified coding standard for automotive power batteries, when carrying out power battery industry management, electric vehicle parameter monitoring and power battery recycling, the consistency and uniqueness of the confirmation of trade information between China and China forced by techpool could not be realized. Unified coding provides a strong support for the implementation of these work, which is also the significance of unified coding for power batteries

residual energy detection for recycling of vehicle power batteries - recycling is advancing

residual energy detection standardizes the detection processes of power battery appearance inspection, polarity detection, voltage discrimination, charge discharge current discrimination, residual energy test, etc., provides evaluation basis for residual energy detection of vehicle power batteries, and helps to improve the safety and scientificity of residual energy detection of waste power batteries

this standard is jointly drafted by Guangdong Bangpu Cycle Technology Co., Ltd., Ningde Times New Energy Technology Co., Ltd., China Automotive Technology Research Center, greenmead Co., Ltd. and Zhejiang Chaowei Chuangyuan Industrial Co., Ltd. The officially released standard has great changes from the previous draft:

environmental conditions, accuracy of measuring instruments and meters

draft: it is divided into lithium-ion power battery and metal hydride nickel power battery. The former shall be implemented according to 6.1.1 and 6.1.2 in qc/t 743, and the latter shall be implemented according to 6.1.1 and 6.1.2 in qc/t 744

official draft: it is no longer subdivided, but uniformly classified as power battery. The testing environment requirements shall be implemented in accordance with 6.1.1 in gb/t, and the accuracy of measuring instruments and meters shall be implemented in accordance with 6.1.2 in gb/t

detection process

opinion draft: it is divided into lithium-ion power battery and nickel metal hydride power battery, and there is a link of "battery module disassembly" after "judging voltage" (this link can be omitted for battery cells and battery modules with clear labels)

official draft: cancel the division between lithium ion power battery and nickel metal hydride power battery. After the "voltage discrimination" link, two links "determination of the first charge and discharge current" and "i5 determination and material discrimination" are added

appearance inspection

official draft: added "visually inspect the appearance of power battery cells and modules. If there are active protection lines, they should be removed before inspection."

information collection: the official draft added "weigh and record the power battery quality"

polarity discrimination and voltage detection

official draft: the "polarity discrimination" and "voltage detection" in the opinion draft are integrated into one part, namely "voltage discrimination"

first charge and discharge current

official draft: on the basis of the opinion draft, the "single battery charge and discharge current" and "battery module charge and discharge current" are subdivided into "with label" and "without label" respectively

we found that the formal draft has made a lot of modifications on the basis of the opinion draft, making the residual energy detection process of power battery more scientific, standardized and safe. At the same time, it also shows that extensive consultation with industry insiders is a necessary condition for formulating a good power battery standard

yuhaijun, general manager of Hunan Bangpu Scrap Automobile Recycling Co., Ltd., said that the "residual energy detection" is a part of China's national standard system for power battery recycling, which provides evaluation and certification standards and screening basis for major waste production units engaged in the production of new energy vehicles and power batteries, and also provides basic reference criteria for the supervision of governments at all levels

a number of national standards work together to achieve brutal recycling, which is expected to end.

China's power battery recycling market is very broad. According to the statistics of industry organizations, the cumulative scrap of power batteries in China will reach 120000-170000 tons around 2020. The recycling market created by recycling cobalt, nickel, manganese, lithium, iron, aluminum and other metals from waste power lithium batteries will exceed 5.3 billion yuan in 2018, 10billion yuan in 2020, and 25billion yuan in 2023. Faced with such an attractive market prospect, Chinese enterprises, including BYD, greenmead, lion science and technology, Santon new energy, etc., have launched the industrial layout of power battery recycling

up to now, China has issued a number of national standards in the field of power batteries, and basically formed a complete system for recycling standards - Specification and size, which unifies the specification and size of power cells, modules and battery packs, and reduces the difficulty of recycling power batteries; The coding rules make the power battery unique and identifiable, and it is possible to trace the whole life cycle; "Residual energy detection" provides an evaluation basis for the residual energy detection of vehicle power batteries and helps to improve the safety and scientificity of the residual energy detection of waste power batteries; The disassembly specification sets strict requirements on the operation procedures, storage, management and other aspects of the recycling of waste power batteries, providing a scientific reference for the recycling and disassembly of power batteries

we can predict that when the tide of power battery retirement comes, under the specifications of these standards, the previous simple and rough recycling state is expected to be ended and replaced by a scientific, standardized, safe and reliable operation mode. Recycling is a weak link in the whole power battery industry chain. If this link is completed, the cycle of the whole industry chain will be opened up

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