GB/T 43522-2023
Guide to manufacture supervision of lithium ion battery for electrical energy storage (English Version)

Standard No.

GB/T 43522-2023

Language

Chinese, Available in English version

Release Date

2023

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 43522-2023

Introduction

Analysis of the core content of the standard

This standard has established a four-dimensional supervision system covering the entire life cycle of lithium-ion batteries:

1. Raw material control: 18 types of key material technical indicators
2. Process control: Three-level manufacturing standards for monomer/module/cluster
3. Inspection system: 63 performance test specifications
4. Quality traceability: Four-fold witnessing of documents/site/shutdown/instrument

---

Comparison of key technical indicators

Supervision link	Core parameters	Witness method	Qualification standard
Cathode material	Surface area ≤15m²/g, pH value 7-9	R+W(3%)	GB/T 30835
Injection process	Water ≤20ppm, dew point ≤-40℃	H+I(1%)	Process document
Thermal runaway test	Diffusion time ≥5min	W(100%)	GB/T 36276

---

Analysis of implementation points

Raw material supervision case

A certain energy storage project found that the magnetic material of the graphite negative electrode exceeded the standard (measured 12ppm＞standard 10ppm). According to Appendix D requirements:

• Immediately launch B.1 quality problem notification
• Trace 3 batches of raw materials
• Increase Class I witness to 5%

Process control innovation

The standard clearly states for the first time that the electrode drying process needs to be monitored simultaneously:

• Solvent concentration ≤1000ppm
• Weight loss rate fluctuation ≤±1.5%
• Online resistivity detection

---

Standard evolution analysis

Compared with the DL/T 586 general supervision standard, this document highlights three breakthroughs:

1. Material dimension: New special requirements for lithium titanate negative electrodes
2. Test method: Introduce new indicators for adiabatic temperature rise test
3. Digital requirements: Mandatory process data traceability

The standard drafting unit CATL and other companies have included the high nickel system process control experience in Appendix E.

GB/T 43522-2023 Referenced Document

• DL/T 2528 Basic Terms of Electric Energy Storage
• DL/T 586 The technical guide of supervision for manufacturing equipment of electric power
• GB 21966 Safety of primary and secondary lithium cells and batteries during transport
• GB/T 13384 General specifications for packing of mechanical and electrical product
• GB/T 191 Packaging.Pictorial marking for handling of goods
• GB/T 24533 Graphite negative electrode materials for lithium ion battery
• GB/T 30835 Lithium iron phosphate-carbon composite cathode materials for lithium ion battery
• GB/T 30836 Lithium titanium oxide and its carbon composite anode materials for lithium ion battery
• GB/T 33143 Aluminium and aluminium alloy foils for lithium ion batteries
• GB/T 36146 Rolled copper foil for lithium ion battery
• GB/T 36276 Lithium-ion batteries for power energy storage
• GB/T 38296 Internal connecting wires and cables of electrical equipments
• GB/T 4798.2 Classification of environmental conditions—Classification of groups of environmental parameters and their severities—Part 2:Transportation and handling
• SJ/T 11723 Electrolyte for lithium-ion batteries
• YS/T 821 Aluminum alloy cover board for battery

GB/T 43522-2023 history

• 2023 GB/T 43522-2023 Guide to manufacture supervision of lithium ion battery for electrical energy storage

Topics on standards and specifications

Standard and Specification