Cold plate, cold plate assembly and motherboard module

A cold plate assembly, comprising:

• a first cold plate and a second cold plate, each comprising:
• a main inlet channel, having a cold fluid inlet and a cold fluid outlet;
• a sub-inlet channel, in fluid communication with the main inlet channel;
• a heat exchange chamber, in fluid communication with the sub-inlet channel;
• a sub-outlet channel, in fluid communication with the heat exchange chamber;
• and
• a main outlet channel, in fluid communication with the sub-outlet channel and having a hot fluid inlet and a hot fluid outlet;
• wherein each of the first cold plate and the second cold plate has a first side and a second side located opposite to each other;
• the cold fluid inlet of the main inlet channel and the hot fluid outlet of the main outlet channel are located on the first side, and the cold fluid outlet of the main inlet channel and the hot fluid inlet of the main outlet channel are located on the second side;
• wherein the main inlet channel of the first cold plate is in fluid communication with the main inlet channel of the second cold plate, and the main outlet channel of the first cold plate is in fluid communication with the main outlet channel of the second cold plate.

A motherboard module, comprising:

• a motherboard, comprising a circuit board, a first heat source and a second heat source which are disposed on the circuit board;
• and
• a cold plate assembly, comprising:
• a first cold plate and a second cold plate, respectively thermally coupled to the first heat source and the second heat source, wherein each of the first cold plate and the second cold plate comprises:
• a main inlet channel, having a cold fluid inlet and a cold fluid outlet;
• a sub-inlet channel, in fluid communication with the main inlet channel;
• a heat exchange chamber, in fluid communication with the sub-inlet channel;
• a sub-outlet channel, in fluid communication with the heat exchange chamber;
• and
• a main outlet channel, in fluid communication with the sub-outlet channel and having a hot fluid inlet and a hot fluid outlet;
• wherein each of the first cold plate and the second cold plate has a first side and a second side located opposite to each other;
• the cold fluid inlet of the main inlet channel and the hot fluid outlet of the main outlet channel are located on the first side, and the cold fluid outlet of the main inlet channel and the hot fluid inlet of the main outlet channel are located on the second side;
• wherein the main inlet channel of the first cold plate is in fluid communication with the main inlet channel of the second cold plate, and the main outlet channel of the first cold plate is in fluid communication with the main outlet channel of the second cold plate.