GB/T 18487.5-2024 Electric vehicle conductive charging system—Part 5:DC charging system for GB/T 20234.3

Scope

This document specifies the general requirements for direct current charging systems of electric vehicles used in GB/T 20234.3 direct current charging interfaces, including control guidance circuits, charging control processes, charging connection control sequences, as well as other requirements such as insulation monitoring devices, additional protective measures, and power failure protection. This document applies to direct current charging systems composed of electric vehicles (referred to as "vehicles") and non-vehicle-mounted conductive chargers (referred to as "non-vehicle chargers" or simply "chargers") that comply with the digital communication protocol specified in GB/T 27930.2. This document applies to non-vehicle-mounted conductive chargers with an isolated system, where the rated voltage on the power supply side does not exceed AC 1,000 V or DC 1,500 V, and the maximum operating voltage on the vehicle side does not exceed DC 1,500 V. Note 1: For non-restricted areas, the recommended direct current operating voltage range at the vehicle interface of non-vehicle-mounted conductive chargers is 200 V to 1,000 V. This document applies to direct current charging systems with a vehicle power supply circuit rated at Class B voltage. For direct current charging systems with a vehicle power supply circuit rated at Class A voltage, the provisions of this document shall be applied with reference. Note 2: For definitions of voltage levels, please refer to GB 18384. Note 3: When the direct current charging systems specified in this document are used in other fields such as electric industrial vehicles and electric construction machinery, additional requirements may be necessary, such as reassessing the short-circuit protection, Y capacitors, insulation resistance, and insulation monitoring devices of the charging system.

Development Information

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