Wearable thermoelectric generators (WTEGs) promise sustainable power for wearable electronics with various strategies proposed for on-body applications. However, there is still a lack of power-demand-oriented system design that directly provides WTEG configurations tailored to targeted end electronics, resulting in sufficient power only under extreme ambience. To address this, we propose a straightforward, power-demand-oriented design framework for WTEGs that bridges the power requirements of end electronics. As we input the properties of thermoelectric materials, specific operational conditions (temperature and heat transfer coefficient), expected power output and required flexibility, the design framework can directly determine the geometric features of thermoelectric pillars and fill factor. The effectiveness has been widely verified using data from the literature, showing a mean absolute deviation of 7.1 %. This framework shows high working efficiency and significantly shortens the design process, which is the very first ever-reported design tool for WTEGs. As a case, we use the framework and design a skin-conformable thermoelectric textile (TET) with optimal structure configurations and enhanced heat transfer capabilities, achieving a high normalized power density of 4.48 μW cm K. As expected, the TET, with a maximum power density of 231 μW cm successfully powered a series of on-body electronics when attached to the forearm at a breezy ambient temperature of ∼283 K. On the other hand, the TET exhibits a cooling effect of 5.73 K. Our work provides a thermal design guide for WTEGs, shedding light on the direct connection between WTEG configurations and end electronics.

中文翻译：

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柔性热电器件的通用设计框架，满足可穿戴电子产品的功率需求


可穿戴热电发电机（WTEG）通过针对身体应用提出的各种策略，为可穿戴电子产品提供可持续电力。然而，仍然缺乏以功率需求为导向的系统设计，直接提供针对目标终端电子设备定制的WTEG配置，导致只有在极端环境下才能提供足够的功率。为了解决这个问题，我们提出了一种简单的、以功率需求为导向的 WTEG 设计框架，可以满足终端电子设备的功率要求。当我们输入热电材料的特性、具体的操作条件（温度和传热系数）、预期的功率输出和所需的灵活性时，设计框架可以直接确定热电柱的几何特征和填充因子。其有效性已通过文献数据得到广泛验证，平均绝对偏差为 7.1%。该框架工作效率高，大大缩短了设计流程，是迄今为止报道的第一个风电机组设计工具。作为一个案例，我们使用该框架设计了一种具有最佳结构配置和增强传热能力的皮肤适形热电纺织品（TET），实现了 4.48 μW cm K 的高归一化功率密度。正如预期的那样，TET 的最大在约 283 K 的微风环境温度下，231 μW cm 的功率密度成功地为一系列体上电子设备提供了动力。另一方面，TET 表现出 5.73 K 的冷却效果。我们的工作提供了热WTEG 设计指南，阐明 WTEG 配置与终端电子设备之间的直接连接。