Detail of NB/T 33021-2015

Introduction of NB/T 33021-2015

NB/T 33021-2015 Specification for electric vehicle off-board bi-directional charger 1 Scope This standard specifies the basic components, functional requirements, technical requirements, inspection rules, test methods and identification of the electric vehicle off-board bi-directional charger (hereinafter referred to as "bi-directional charger"). This standard is applicable to the electric vehicle off-board bi-directional charger by conductive bi-directional charging. 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 2421.1 Environmental testing - General and guidance (IEC 60068-1:1988, IDT) GB/T 2423.1 Environmental testing - Part 2: Test methods - Tests A: Cold (IEC 60068-2-1:2007, IDT) GB/T 2423.2 Environmental testing for electric and electronic products - Part 2:Test methods - Tests B: Dry heat (IEC 60068-2-2:2007, IDT) GB/T 2423.4 Environmental testing for electric and electronic products - Part 2: Test method - Test Db: Damp heat, cyclic (12h+12h cycle) (IEC 60068-2-30:2005, IDT) GB/T 2423.5 Environmental testing for electric and electronic products - Part 2: Test methods Test Ea and guidance: Shock (IEC 68-2-27:1987, IDT) GB/T 2423.10 Environmental testing for electric and electronic products - Part 2: Tests methods - Test Fc: Vibration (sinusoidal) (IEC 60068-2-6:1995, IDT) GB/T 2423.55 Environmental testing for electric and electronic products - Part 2: Test methods - Test Eh: Hammer tests (IEC 60068-2-75:1997, IDT); GB/T 3859.1 Semiconductor converters - General requirements and line commutated converters - Part 1-1: Specification of basic requirements (IEC 60146-1-1:2009, MOD) GB 4208 Degrees of protection provided by enclosure (IP code) (IEC 60529:2001, IDT) GB 9254 Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement (IEC/CISPR 22:2006, IDT) GB/T 17626.2 Electromagnetic compatibility (EMC) - Testing and measurement techniques - Electrostatic discharge immunity test (IEC 61000-4-2:2001, IDT) GB/T 17626.3 Electromagnetic compatibility - Testing and measurement techniques - Radiated radio-frequency electromagnetic field immunity test (IEC 61000-4-3:2002, IDT) GB/T 17626.4 Electromagnetic compatibility - Testing and measurement techniques - Electrical fast transient/burst immunity test (IEC 61000-4-4:2004, IDT) GB/T 17626.5 Electromagnetic compatibility - Testing and measurement techniques - Surge immunity test (IEC 61000-4-5:2005, IDT) GB/T 18487.1 Electric vehicle conductive charging system - Part 1: General requirements GB/T 19826-2005 General specification and safety requirement for DC power supply equipment of power projects GB/T 29317 Terminology of electric vehicle charging/battery swap infrastructure 3 Terms and definitions For the purposes of this standard, the terms and definitions given in GB/T 18487.1 and GB/T 29317 as well as the following apply. bi-directional charger device for performing bi-directional electric energy conversion between the battery system of an electric vehicle and the grid 4 General 4.1 The bi-directional charger shall be capable of charging the battery system safely and automatically, and feeding back and discharging the electric energy of the battery to the grid according to the use requirements, which can automatically switch between the charging state and the discharging state. 4.2 The bi-directional charging process shall not endanger the safety of surrounding people and equipment or the safe and stable operation of the connected grid, nor cause damage or less damage to the battery body. 5 Basic components The basic components of the bi-directional charger include: power unit, control unit, metering unit, bi-directional charging interface, AC power supply interface, communication interface and human-machine interaction interface. 6 Functional requirements 6.1 Charging function 6.1.1 The bi-directional charger shall dynamically adjust the charging operation parameters according to the control instructions of the battery management system (or vehicle communication controller) and the upper monitoring system, and perform corresponding operations to charge the battery system. 6.1.2 The operating parameters may be set manually for the bi-directional charger to charge the battery system. 6.2 Discharging function 6.2.1 The bi-directional charger shall dynamically adjust the discharge operation parameters according to the control instructions of the battery management system (or vehicle communication controller) and the upper monitoring system, perform corresponding operations, and feed back the energy of the power battery system to the grid.

Contents of NB/T 33021-2015

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 General 5 Basic components 6 Functional requirements 7 Technical requirements 8 Inspection rules 9 Test methods 10 Identification