In this paper, the Joule-Thomson expansion of Born-Infeld AdS black holes is studied in the extended phase space, where the cosmological constant is identified with the pressure. The Joule-Thomson coefficient, the inversion curves and the isenthalpic curves are discussed in detail using a 4-dimensional black hole. The critical point of a Born-Infeld black hole is depicted with varying parameter and the charge Q. In plane, the inversion temperature curves and isenthalpic curves are obtained with different parameter and charge Q. We find that the missing negative slope is still conserved in Born-Infeld black holes. We also extend our discussion to arbitrary dimension higher than 4. The critical temperature and the minimum of inversion temperature are compared. The ratio is asymptotically as Q increases or with , and reproduces previous results at higher dimensions.

在本文中，在扩展相空间中研究了 Born-Infeld AdS 黑洞的 Joule-Thomson 展开，其中宇宙学常数与压力相同。焦耳-汤姆逊系数、反演曲线和等焓曲线使用 4 维黑洞详细讨论。Born-Infeld 黑洞的临界点用不同的参数和电荷Q来描绘。在平面上，得到不同参数和电荷Q的反演温度曲线和等焓曲线. 我们发现丢失的负斜率在 Born-Infeld 黑洞中仍然是守恒的。我们还将讨论扩展到大于 4 的任意维度。比较了临界温度和反转温度的最小值。该比率随着Q的增加或随着的增加而渐近，并在更高维度上重现先前的结果。