Easily-radiating water channel substrate structure, power assembly and motor controller

The utility model relates to a water channel substrate structure easy to dissipate heat, a power assembly and a motor controller, and belongs to the technical field of motor controllers. The water channel substrate structure comprises a substrate main body; the first power module fixing groove is formed in one surface of the substrate main body; the second power module fixing groove is formed in the other surface of the substrate main body, and the position of the second power module fixing groove corresponds to the position of the first power module fixing groove; and the heat dissipation water channel is arranged in the substrate main body and is positioned between the first power module fixing groove and the second power module fixing groove. According to the water channel substrate structure shell, a mold is simple, excessive mold opening can be avoided, the heat dissipation efficiency is higher, the size of a controller can be reduced, and the cost is reduced. 本实用新型涉及一种易散热水道基板结构、功率组件以及电机控制器，属于电机控制器技术领域。所