GB 38032-2020 Electric buses safety requirements English
Electric buses safety requirements
1 Scope
This standard specifies the safety requirements and test methods for electric buses.
This standard is applicable to electric buses of Category M2 and Category M3, including battery electric buses and hybrid electric buses.
This standard is not applicable to fuel cell electric buses.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2408-2008 Plastics - Determination of burning characteristics - Horizontal and vertical test
GB 4208 Degrees of protection provided by enclosure (IP code)
GB 8624-2012 Classification for burning behavior of building materials and products
GB/T 10295 Thermal insulation - Determination of steady-state thermal resistance and related properties - Heat flow meter apparatus
GB 13094 The safety requirements for light bus construction
GB/T 15089 Classification of power-driven vehicles and trailers
GB 17578 Requirements and test methods of strength for the superstructure of bus
GB/T 18384 Electric vehicles safety requirements
GB/T 19596 Terminology of electric vehicles
GB 20071-2006 The protection of the occupants in the event of a lateral collision
GB/T 31498-2015 The safety requirement of electric vehicle post crash
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB 13094, GB/T 15089, GB/T 19596 and the following apply.
3.1
minimum management unit of battery system
minimum battery unit monitored by the battery management system
4 Safety requirements
4.1 General
The general safety of electric buses shall comply with the requirements of GB 18384.
4.2 Waterproof and dustproof performance
4.2.1 Wading requirement of complete vehicle
Carry out the complete vehicle wading test according to the test method specified in 5.1.1. Within 10min after completion of the vehicle wading test, the insulation resistance of the complete vehicle shall be greater than 1MΩ.
4.2.2 Protection degree requirements for Class B voltage components
Carry out the protection degree test according to the test method specified in 5.1.2. The insulation resistance of the complete vehicle shall be greater than 1MΩ, and the protection degree of the following components shall not be lower than IP67:
a) Class B voltage electrical equipment with lowest point below the cabin floor and 500mm above the ground and connectors connected to Class B voltage components;
b) Class B voltage electrical equipment installed on the roof and without protective devices (except those for receiving electricity).
4.2.3 Flooding requirement of complete vehicle
Carry out the flooding test of complete vehicle according to the test method specified in 5.1.3, and the vehicle will not catch fire or explode within 2h after the test is completed.
