QC/T 1206.1-2024 Thermal management system for electric vehicle traction battery - Part 1: General requirements
1 Scope
This standard specifies technical requirements and test methods for thermal management systems of traction battery (hereinafter referred to as “the battery”) for electric vehicles.
This document is applicable to product development, testing and evaluation of thermal management system of traction battery for electric vehicles.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 19596 Terminology of electric vehicles
GB 38031 Electric vehicles traction battery safety requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 19596 and GB 38031 and the following apply.
3.1
thermal management system
system that controls the temperature of the battery by means of cooling, heating, and thermal insulation
3.2 Cooling systems
3.2.1
air cooling system
system that uses air as a heat transfer medium to cool the battery
Note: Air cooling systems may be classified into active air cooling system and passive air cooling system by the cooling mode.
3.2.2
liquid cooling system
system that uses coolant, e.g., a mixture of ethylene glycol and water, as the heat transfer medium to cool the battery
3.2.3
direct cooling system
system that uses a refrigerant as a heat transfer medium to cool the battery
3.3
heating system
system that uses a heating device to heat the battery
3.3.1
electric heating film
heating device consisting of a heating element, an insulating coating, a lead-out wire and a plug/receptacle connector, etc.
3.3.2
positive temperature coefficient heating
heating device consisting of a heat-sensitive heat-generating element producing PTC effect, and a package, etc.
3.4
thermal insulation system
system that uses a thermal insulation material for thermal insulation/isolation of the battery
3.5
battery control unit (BCU)
electronic device that controls, manages, tests, or calculates electrical and thermal related parameters of the battery system and provides communication between the battery system and other vehicle controllers
3.6
maximum temperature
highest temperature of cells in the battery pack measured by the temperature sensor
3.7
minimum temperature
lowest temperature of cells in the battery pack measured by the temperature sensor
3.8
temperature difference
difference between the highest and lowest cell temperatures collected at the same time in the battery pack
Foreword i
Introduction ii
1 Scope
2 Normative references
3 Terms and definitions
4 Technical requirements
5 Test conditions
6 Test methods
Annex A (Informative) Typical constructions of the battery pack and battery system
Annex B (Informative) Operation guide of thermal management system test using a test rig
