Electronic device and liquid cooling heat dissipation device thereof

An electronic device, comprising:

• at least one heat generation component;
• and
• a liquid cooling heat dissipation device contacting the at least one heat generation component, wherein the liquid cooling heat dissipation device includes:
• a heat-dissipating module;
• and
• a liquid supply module including an outer cover body disposed on the heat-dissipating module and at least one pump disposed inside the outer cover body, wherein the outer cover body has an inner space divided into a first independent space adjacent to the heat-dissipating module and a second independent space far away from the heat-dissipating module and insulated from the first independent space, the at least one pump includes a stator disposed inside the first independent space and a rotator disposed inside the second independent space, and the stator is closer to the heat-dissipating module than the rotator;
• wherein the heat-dissipating module includes:
• a heat-conducting substrate having a heat-conducting body contacting the at least one heat generation component and a plurality of heat-dissipating fins disposed on the heat-conducting body;
• a fluid-splitting board disposed on the heat-dissipating fins;
• a fluid-conducting board disposed on the fluid-splitting board;
• and
• an outer casing body is disposed on the heat-conducting body to cover the heat-dissipating fins, the fluid-splitting board, and the fluid-conducting board.