Systems and methods for diagnosing faults associated with use of primary power supply and backup power supply

A power supply diagnostics system is disclosed. The power supply diagnostics system includes a first direct current-direct current (DC/DC) control module configured to change an output of a first variable DC/DC converter and a second DC/DC control module configured to change an output of a second variable DC/DC converter. The first and second variable DC/DC converters are connected to a load. Thepower supply diagnostics system also includes: a first timer module; a second timer module; a first voltage comparison module configured to (i) store a voltage measured at the load based on an outputof the first timer module and (ii) begin sampling a plurality of voltages measured at the load base on an output of the second timer module; and a DC/DC status module configured to change an operatingparameter of a vehicle based on a comparison of the voltage and the plurality of voltages. 公开了一种电源诊断系统。电源诊断系统包括：第一直流-直流(DC/DC)控制模块，被配置为改变第一可变DC/DC转换器的输出；以及第二DC/DC控制模块，被配置为改变第二可变DC/DC转换器的输出。第一和第二可变DC/DC转换器连接到负载。电源诊断系统还包括：第一计时器模