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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by China Electrical Equipment Industrial Association.
This standard is under the jurisdiction of the National Technical Committee 342 on Fuel Cell and Flow Battery of Standardization Administration of China (SAC/TC 342).
Test Methods for Proton Exchange Membrane Fuel Cell Power System at Subzero Environment
1 Scope
This standard specifies the general safety requirements, test conditions, test platform, routine test before subzero test, subzero test method and test report of proton exchange membrane fuel cell power system at subzero (below 0℃) environment.
This standard is applicable to the test for storage, startup and working performance of proton exchange membrane fuel cell power system with air as oxidant at subzero (below 0℃) environment.
This standard is applicable to the complete fuel cell power system.
Note: the system is composed of some or all of the following components as needed to achieve the set function:
——Fuel processing system: the system that meters, conditions, processes, and regulates the pressure of the fuel required for fuel cell power system.
——Air processing system: the system that meters, conditions, processes, and pressurizes the air required for fuel cell power system.
——Thermal management system: the system that provides cooling and heat dissipation functions to maintain thermal balance within the fuel cell power system; it also recovers residual heat and assists in heating the relevant components in the system during startup.
——Water processing system: the system that processes the recovered or added water for use in the fuel cell system.
——Power regulating system: the system that controls the electric energy generated to match with the power demand specified by the user.
——Automatic control system: the system that consists of sensors, actuators, valves, switches and logic elements, which is used to maintain the parameters of fuel cell power system within the range set by the manufacturer without manual intervention.
——Ventilation system: the system that provides air to the cabinet of fuel cell power system by natural or mechanical means.
——Fuel cell stack: an assembly that consists of a plurality of single cells, pole plates, cooling plates, shared pipelines and support structures. The typical function is to convert hydrogen-rich gas and air into direct current, heat, water and other by-products through electrochemical reaction.
——Fuel cell module: consists of one or more fuel cell stacks, electrical coupling devices for transmitting electrical energy of the stack, and monitoring devices.
——Built-in energy storage device: the energy storage device equipped inside the system to help or supplement the fuel cell module to supply power to internal or external load.
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 18384.3-2001 Electric Vehicles - Safety Specification - Part 3: Protection of Persons against Electric Hazards
GB/T 20042.2-2008 Proton Exchange Membrane Fuel Cell - General Technical Specification of Fuel Cell Stacks
GB/T 25319-2010 Fuel Cell Power System Used for Motor Vehicles - Technical Specification
GB/T 27748.1 Stationary Fuel Cell Power Systems - Part 1: Safety
GB/T 27748.2-2013 Stationary Fuel Cell Power Systems - Part 2: Performance Test Methods
GB/T 28816 Fuel Cell - Terminology
GB/T 30084-2013 Portable Fuel Cell Power System - Safety
GB/T 31035 Test Methods for Proton Exchange Membrane Fuel Cell Stack at Subzero Environment
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 28816 and GB/T 31035 apply.
3.1
subzero startup
a process of fuel cell system from code state below 0℃ to 90% of the rated output power
4 General Safety Requirements
The general safety requirements of proton exchange membrane fuel cell stacks shall meet the requirements of 4.2, GB/T 20042.2-2008.
The safety requirements of fuel cell power system used for motor vehicles shall meet the requirements of 4.2, GB/T 25319-2010.
Fixed proton exchange membrane fuel cell power system shall meet the requirements of GB/T 27748.1.
The safety requirements of portable proton exchange membrane fuel cell power system shall meet the requirements of 1.2, GB/T 30084-2013.
5 Test Conditions
The test conditions shall meet the following requirements:
——ambient temperature: temperature of climate chamber is 23℃±2℃, low temperature 0~-40℃, in the specific test, the ambient temperature is determined through negotiation of the parties according to the test object;
——air pressure of test environment: 91~104kPa.
6 Test Platform
6.1 Test apparatus and requirements
The subzero test chamber and test platform required for fuel cell power system shall at least meet the following requirements:
——Subzero test chamber: shall meet the subzero ambient conditions required for the test and the temperature distribution difference in the chamber shall not exceed ±2℃. In addition to the hydrogen source, the gas supply, coolant and circuit interface are placed in the climate chamber, and the temperature measurement is set at the inlet and coolant port to ensure that the temperature of air and gas at fuel inlet of the fuel cell power system is the set ambient temperature. The fuel cell power system and its controller as well as the radiator are placed in the climate chamber. A hydrogen alarm and exhaust outlet shall be installed in the chamber to ensure the safety of the test process.
——Test platform of fuel cell power system shall be provided with the function necessary for meeting the test of fuel cell.
——Load shall meet the requirements for the routine test of fuel cell system.
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 General Safety Requirements
5 Test Conditions
6 Test Platform
7 Routine Test before Subzero Test
8 Subzero Test
9 Test Report
Annex A (Informative) Shutdown Procedure for Subzero Storage
Annex B (Informative) Test Report
