Choke coil module of high power density dc-ac power inverter

A choke coil module of a high power density DC-AC power inverter, the power inverter comprising a casing, the choke coil module being disposed in the casing, two sides of the casing being formed with a plurality of air inlets and a plurality of air outlets respectively, one of the two sides of the casing being provided with a fan unit for guiding outside air to enter the casing from the air inlets and discharge from the air outlets, the choke coil module comprising:

• a retainer, including a lower plate and an upper plate which are laterally spaced from each other, the lower plate being fixed to a bottom of the casing, the upper plate being located above the lower plate and connected to the lower plate with a plurality of longitudinal locking rods, the retainer being formed with an accommodation space between the upper plate and the lower plate, the upper plate and the lower plate each having at least one slot;
• at least one choke coil, disposed obliquely in the accommodation space of the retainer, a top portion and a bottom portion of the choke coil protruding out of and leaning against the slots of the upper plate and the lower plate respectively;
• wherein when the power inverter is actuated, the choke coil generates heat, the outside air is guided by the fan unit to enter the casing through the air inlets, and the heat generated by the choke coil is expelled to the outside through the air outlets of the casing.