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GB/T 38775.10-2025Electric vehicle wireless power transfer - Part 10: Conformance test for communication protocols (English PDF)

电动汽车无线充电系统　第10部分：通信协议一致性测试

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 31, 2025

Implementation date

July 1, 2026

Scope

GB/T 38775.10-2025 is the English-translated version of 电动汽车无线充电系统　第10部分：通信协议一致性测试.

GB/T 38775.10-2025 is Part 10 of the Chinese national standard on electric vehicle wireless power transfer and covers conformance testing of the communication protocols that control wireless charging.

It specifies the test requirements and the test methods for the CI interface between the communication service unit (CSU) and the in-vehicle unit (IVU), and for the CW interface between the CSU and the wireless charging control management system (WCCMS).

It applies to Class A and Class B static magnetically coupled systems with rated input and output voltages up to 1 000 V AC or 1 500 V DC. It defines abstract test case, abstract test suite, conformance test and test case, sets message timeout and periodic time error requirements, and gives the coding rules for test items. It was issued on 31 December 2025 and has applied since 1 July 2026.

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Document preview — GB/T 38775.10-2025

National Standard of the People's Republic of China

ICS: 43.040.99
Classification: K 81

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword3
Introduction5
1 Scope7
2 Normative References7
3 Terms and Definitions7
4 Abbreviations8
5 Conformance Test for the CI Interface8
5.1 Test System Requirements8
5.2 CSU Conformance Test Content10
5.3 IVU Conformance Test Content27
6 Conformance Test for the CW Interface51
6.1 Test System Requirements51
6.2 CSU Conformance Test Content52
6.3 WCCMS Conformance Test Content58
References64

Foreword

This document was drafted in accordance with the provisions of GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.

This document is Part 10 of GB/T 38775 Electric vehicle wireless power transfer. GB/T 38775 has issued the following parts.

--- Part 1: General requirements;

--- Part 2: Communication protocols between on-board charger and wireless power transfer device;

--- Part 3: Specific requirements;

--- Part 4: Limits and test methods of electromagnetic environment;

--- Part 5: Electromagnetic compatibility requirements and test methods;

--- Part 6: Interoperability requirements and testing - Ground side;

--- Part 7: Interoperability requirements and testing - Vehicle side;

--- Part 8: Specific requirements of commercial vehicle;

--- Part 9: Communication protocols between on-board charger and wireless power transfer device - Application layer and data link layer;

--- Part 10: Conformance test for communication protocols.

Please note that certain contents of this document may involve patents. The institution issuing this document assumes no responsibility for identifying such patents.

1 Scope

This document specifies the conformance test requirements, conformance test system architecture, and conformance test methods for the communication protocols used to implement wireless charging control between the communication service unit (CSU) and the in-vehicle unit (IVU), as well as between the CSU and the wireless charging control management system (WCCMS), within the electric vehicle wireless power transfer.

This document is applicable to Class A and Class B static magnetically coupled wireless power transfers; other types of systems may refer to this document for guidance. The maximum rated input voltage of the system power supply is 1 000 V AC or 1 500 V DC, and the maximum rated output voltage is 1 000 V AC or 1 500 V DC.

2 Normative References

The contents of the following documents constitute indispensable clauses of this document through normative references in the text. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document.

GB/T 19596 Terminology of electric vehicles

GB/T 38775.1-2020 Electric vehicle wireless power transfer - Part 1: General requirements

GB/T 38775.2-2020 Electric vehicle wireless power transfer - Part 2: Communication protocols between on-board charger and wireless power transfer device

GB/T 38775.3-2020 Electric vehicle wireless power transfer - Part 3: Specific requirements

GB/T 38775.9-2025 Electric vehicle wireless power transfer - Part 9: Communication protocols between on-board charger and wireless power transfer device - Application layer and data link layer

3 Terms and Definitions

The terms and definitions defined in GB/T 19596, GB/T 38775.1-2020, GB/T 38775.2-2020, GB/T 38775.3-2020, and GB/T 38775.9-2025, as well as the following terms and definitions, are applicable to this document.

3.1 Abstract Test Case

A complete and independent specification of the actions required to achieve a specific testing objective, defined at the abstraction level of a particular abstract test method. It begins and ends in a stable test state. [Source: GB/T 17178.1-1997, 3.3.3]

3.2 Abstract Test Suite; ATS

A test suite composed of abstract test cases. [Source: GB/T 17178.1-1997, 3.3.6]

3.3 Conformance Test

The degree of conformance implementation achieved by the IUT during testing. [Source: GB/T 17178.1-1997, 3.3.23]

3.4 Test Case

An abstract or executable test case. [Source: GB/T 17178.1-1997, 3.3.107]

4 Abbreviations

The following abbreviations are applicable to this document.

CI. Interface between CSU and IVU (CSU-IVU)

CSU. Communication Service Unit

CW. Interface between CSU and WCCMS (CSU-WCCMS)

IUT. Implementation Under Test

IVU. In-Vehicle Unit

WCCMS. Wireless Charging Control Management System

5 Conformance Test for the CI Interface

5.1 Test System Requirements

5.1.1 Overview

The conformance test for the CI interface verifies whether the IUT meets the requirements of GB/T 38775.9-2025 - specifically, it verifies the degree of the IUT's compliance with the standard in terms of protocol implementation. The conformance test system architecture for communication protocols is shown in Figure 1.

5.1.2 Test message time error requirements

The IUT transmits messages periodically during communication and simultaneously receives messages from the other party. If no message is received from the other party or no correct message is received within the timeout period, a timeout will be determined and an error message will be transmitted. Message timeout time and periodic time error requirements are shown in Table 1.

5.1.3 Test case coding rules

The coding rules for conformance test items of communication protocols are shown in Figure 2.

The tests are conducted in order of increasing complexity, from positive to negative tests. In the negative test, the test system will either not transmit a message or transmit a message that does not conform to a certain message type definition. The "non-conformance" includes incorrect message command codes, incorrect message content (transmitting reserved bits, missing messages, or extra messages), etc. Coding rule example. CIP.2001. This test case code represents a positive test case for a CI interface, the test phase is the charging initiation phase, and the test sequence number is 001. […]

5.2 CSU Conformance Test Content

5.2.1 Charging initiation phase 1

Table 2 shows the CSU test cases for the charging initiation phase 1, which mainly test the compatibility detection preflight, initial foreign object detection, and initial alignment detection messages during this phase. […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 68 pages — is available in the English PDF.

Referenced standards

Normative references

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