Power distribution board, modular chassis system and operating method thereof

A modular chassis system for installing a plurality of electrical devices comprising:

• a power distribution board comprising:
• a plurality of detecting pins configured to electrically connect to the plurality of electrical devices respectively, wherein each of the detecting pins is configured to detect a modular type of a respective one of the electrical devices;
• a microcontroller electrically connected to the plurality of detecting pins, wherein the microcontroller is configured to selectively assign one of a plurality of configurations according to the detected modular type;
• and
• a plurality of protecting circuits electrically connected to the microcontroller and configured to correspond to the plurality of electrical devices, wherein each of the protecting circuits is configured to assign a rated power value according to the assigned one of the configurations;
• a bus cable electrically connecting to the power distribution board, wherein the bus cable is configured to connect to an external power to provide an electricity to the modular chassis system;
• and
• a fan assembly electrically connecting to the microcontroller and having a plurality of fans, wherein each of the fans adjusts a fan speed according to the assigned one of the configurations;
• wherein the microcontroller is configured to assign the protecting circuits according to a default configuration;
• and
• wherein the plurality of protecting circuits are configured to perform a power monitor procedure according to the assigned rated power values;
• the power monitoring procedure is a heavy-load test, when the heavy-load test is failed, the microcontroller re-assigns the plurality of protecting circuits according to the default configuration, determines the modular type of each of the electrical devices according each of the detecting pins, and assigns another one of the plurality of configurations according to each of the modular types, each of the protecting circuits assigns the rated power value according said another one of the assigned configurations, and the plurality of protecting circuits executes the power monitoring procedure according to the assigned rated power values and the rated power value defined by the default configuration is greater than every rated power values defined in the plurality of configurations.

A method for operating a modular chassis system, wherein the modular chassis system is configured to install a plurality of electrical devices and each of the electrical devices corresponds to a detecting pin and a protecting circuit, and the method comprises:

• providing a power to boot the modular chassis system by a bus cable;
• after providing the power to boot the modular chassis system by the bus cable, assigning the plurality of protecting circuits according to a default configuration by a microcontroller;
• determining a modular type of each of the electrical devices by a microcontroller according to each of the detecting pins;
• assigning one of a plurality of configurations according to each of the modular types by the microcontroller;
• assigning a rated power value according to the assigned configuration by each of the protecting circuits;
• and
• executing a power monitoring procedure according to the assigned rated power values by the protecting circuits, wherein the power monitoring procedure is a heavy-load test, when the heavy-load test is failed, re-assigning the protecting circuits according to the default configuration, determining the modular type of each of the electrical devices by the microcontroller according each of the detecting pins;
• assigning another one of the plurality of configurations according to each of the modular types by the microcontroller;
• assigning the rated power value according said another one of the assigned configurations by each of the protecting circuits;
• and executing the power monitoring procedure according to the assigned rated power values by the protecting circuits;
• and the rated power value defined by the default configuration is greater than every rated power values defined in the plurality of configurations.