One-sentence summary
GB/T 20234.1-2023 is the foundational general standard for electric vehicle conductive charging connection sets, specifying requirements for AC (690 V / 250 A) and DC (1 500 V / 1 000 A) charging connectors in design, safety, and testing. Proposed by the Ministry of Industry and Information Technology and under the jurisdiction of the National Technical Committee for Automotive Standardization (TC114), it was issued and effective on September 7, 2023.
Standard Overview
| Item | Content |
|---|---|
| Standard No. | GB/T 20234.1-2023 |
| Standard Name | Connection set for conductive charging of electric vehicles — Part 1: General requirements |
| Standard Status | Current (Issued and effective September 7, 2023) |
| Issuing Authority | State Administration for Market Regulation (SAMR), Standardization Administration of China (SAC) |
| Competent Authority | Ministry of Industry and Information Technology |
| Responsible Committee | Ministry of Industry and Information Technology (National Technical Committee for Automotive Standardization, TC114) |
| CCS | T35 |
| ICS | 43.040.99 |
Scope of Application
This document applies to AC charging connection sets for electric vehicle conductive charging with frequency 50 Hz, rated voltage not exceeding AC 690 V, and rated current not exceeding 250 A, as well as DC charging connection sets with rated voltage not exceeding DC 1 500 V and rated current (continuous maximum operating current) not exceeding 1 000 A.
This document does not apply to the supply interfaces of charging connection sets using standardized plugs and sockets conforming to GB/T 1002 and GB/T 1003.
Applicable to: Design, manufacturing, inspection, and acceptance of EV charging connection sets.
Key Clause Highlights
| Clause | Content | Affected Parties |
|---|---|---|
| Clause 1 (Scope) | Specifies voltage/current limits: AC 690 V / 250 A, DC 1 500 V / 1 000 A | Connector manufacturers, EV manufacturers |
| Clause 3 (Terms & Definitions) | Defines key terms: charging connection set, vehicle inlet, supply outlet, etc. | Industry-wide terminology alignment |
| Clause 4 (General Requirements) | Specifies basic design requirements for structure, materials, ingress protection | Product design engineers |
| Clause 5 (Rated Values) | Specifies methods for rating voltage, current, frequency | Electrical design, QA |
| Clause 6 (Connection Interface) | Specifies mechanical structure, dimensions, contact arrangement | Interface design, tooling development |
| Clause 7 (Contact Functions) | Specifies electrical function allocation for each contact (power, ground, communication, control pilot) | Electrical system design |
| Clause 8 (Types & Structure) | Specifies type classification and structural dimensions | Product structure design |
| Clause 9 (Test Methods) | Specifies test methods for electrical, mechanical, and environmental performance | Quality inspection, type testing bodies |
Note: Specific clause numbers are based on the standard's scope and framework; refer to the official text for exact wording.
Compliance Recommendations
- Product Design: Ensure rated voltage and current do not exceed the limits specified in Clause 1 (AC 690 V / 250 A, DC 1 500 V / 1 000 A).
- Interface Compatibility: Vehicle inlet and supply outlet contact arrangement and dimensions must comply with Clauses 6–8 to ensure interoperability.
- Type Testing: Complete all type test items per Clause 9 before product finalization, including dielectric strength, insulation resistance, temperature rise, and ingress protection.
- Standard Update Tracking: GB/T 20234.1-2023 supersedes GB/T 20234.1-2015; update technical documentation and product designs accordingly.
Official Sources
- National Standard Information Public Service Platform (openstd): GB/T 20234.1-2023
- National Technical Committee for Automotive Standardization (TC114): www.catarc.org.cn
- Ministry of Industry and Information Technology: www.miit.gov.cn