GB/T 31467.1-2015 - Battery Design

Lithium-Ion Traction Battery Pack and System for Electric Vehicles: Part 1 — High Power Applications

GB/T 31467.1-2015 specifies the test methods and performance requirements for lithium-ion traction battery packs and systems used in high-power electric vehicle applications, primarily hybrid electric vehicles (HEVs) and plug-in hybrid vehicles (PHEVs) where peak power delivery is the primary design driver. It was issued by the Standardization Administration of China (SAC) and forms Part 1 of the GB/T 31467 series, which is the Chinese national adaptation of the ISO 12405 international standard series. The standard was implemented on 1 October 2015.

Published by: Standardization Administration of China (SAC)

Current edition: GB/T 31467.1-2015

Part of series: GB/T 31467 series (Parts 1, 2, and 3); Part 3 covers safety requirements

Status: Recommended (GB/T prefix) — voluntary but widely referenced for MIIT vehicle type approval

Based on: ISO 12405-1:2011 (High power applications), adapted for Chinese EV market conditions

Scope

GB/T 31467.1 applies to lithium-ion traction battery packs and systems installed in road electric vehicles designed for high-power applications, including:

Hybrid Electric Vehicles (HEVs): full and mild hybrid vehicles where the battery primarily supports motor assist and regenerative braking rather than extended electric range
Plug-in Hybrid Electric Vehicles (PHEVs): vehicles with both combustion engines and significant electric range capability
High-power BEV systems: battery systems where peak power-to-energy ratio (C-rate) is the dominant design constraint

Key Test Items

Capacity and energy: rated capacity and energy measurement at standard conditions; capacity at different discharge rates
Power characteristics: peak power at various state of charge levels; power fade with cycling
Charge and discharge efficiency: round-trip energy efficiency measurement at defined conditions
High and low temperature performance: capacity and power retention at -20°C, 0°C, 25°C, and 55°C
Cycle life: standard cycle life (number of charge/discharge cycles to 80% capacity retention) and operational cycle life using application-specific duty cycles for HEV/PHEV service profiles
Internal resistance: DC internal resistance measurement at defined SOC and temperature points
Storage performance: capacity retention and recovery after defined storage period at elevated temperature

Relationship to GB/T 31467 Series

Part 1 (this standard): performance testing for high-power (HEV/PHEV) applications
Part 2 (GB/T 31467.2-2015): performance testing for high-energy (BEV) applications
Part 3 (GB/T 31467.3-2015): safety requirements and test methods — the safety counterpart to Parts 1 and 2; replaced in part by GB 38031-2020

Related Standards

GB 38031 — China mandatory EV traction battery safety standard (supersedes GB/T 31467.3 safety tests)
ISO 12405-1:2011 — International equivalent for high-power traction battery pack testing
GB/T 31486-2024 — Electrical performance requirements at cell level (complements GB/T 31467.1 pack-level tests)

Disclaimer: This is not a definitive guide, just an indication and it is important that you always go back to the source for legislation.