道路车辆扩展车辆（ExVe）方法第2部分:扩展车辆设计方法

[中文适用范围]： 本文件规定了扩展车辆（ExVe）制造商在制定自己的设计方法时考虑的一般规则和基本原则。 它没有指定这些设计方法的起草和实施方式。 它通过模板指定传达给 ExVe 制造商以请求设计新 ExVe 功能的必要信息。 它还通过模板指定 ExVe 制造商为响应该请求而提供的信息。 它没有指定导致请求信息的详细说明的过程，也没有指定与响应信息的通信相关的过程。 它涉及 ISO 20077-1 范围内提到的扩展车辆的设计，无论 ExVe 与外部系统或各方之间使用的通信接口类型如何。 它不涉及 ExVe 的内部通信。 它并不标准化软件或硬件的实施，也不排除 ExVe 制造商在设计新的 ExVe 功能时可能选择的任何技术解决方案。 它涉及车辆的设计和生产阶段，其中这些阶段包括 ExVe 制造商对仍在生产的车辆型号、变型或类型进行的后续设计升级。 注：如果必须使用新的车辆远程通信接口，则本文件也适用于设计所需的 ExVe 功能。 [外文原描述]： ISO 20077-2:2018 specifies general rules and basic principles the manufacturer of the extended vehicle (ExVe) considers when elaborating its own design method. It does not specify the manner in which these design methods are drafted and implemented. ISO 20077-2:2018 specifies by means of a template the necessary information that is communicated to the ExVe manufacturer for requesting the design of a new ExVe functionality. It also specifies, by means of a template, the information the ExVe manufacturer provides for responding to that request. ISO 20077-2:2018 does not specify the process leading to the elaboration of the request information nor the process associated to communication of the response information. ISO 20077-2:2018 concerns the design of the extended vehicles mentioned in the scope of ISO 20077‑1, regardless of the type of communication interface which is used between the ExVe and external systems or parties. It does not concern the internal communication of the ExVe. It does not standardize the implementation of software or hardware nor preclude any technical solution the ExVe manufacturer might select when designing a new ExVe functionality. ISO 20077-2:2018 relates to the design and production phases of a vehicle, where these phases include the subsequent design upgrades by the ExVe manufacturer of vehicle models, variants, or types still in production. NOTE Should new interfaces for remote communication with the vehicle become mandatory, then this document is also applicable for designing the requested ExVe functionalities.