Power supply

A power supply comprising:

• a battery;
• an inverter that controls an output voltage of the battery;
• an air-cooler that cools the battery and the inverter with cooling air;
• a case that houses the battery, the inverter, and the air-cooler;
• an air guide plate disposed inside the case;
• and
• a support part that is erected from an inner bottom portion of the case and that supports the air guide plate at a position above the battery,
• wherein the air-cooler includes a cooling fan and a heat exchanger,
• wherein the air guide plate guides air blown from the cooling fan to the battery and the inverter,
• wherein the heat exchanger cools the air that has passed through the battery and the inverter,
• wherein the air guide plate has a first portion disposed above the battery so as to cover an upper surface of the battery,
• wherein the battery includes a plurality of battery modules disposed side by side in a planar manner,
• wherein the first portion has a slit formed to guide the air blown from the cooling fan to a gap between the plurality of battery modules,
• wherein the battery has a first side surface disposed on a downstream side in a blowing direction of the air from the cooling fan,
• wherein the support part closes a gap between the plurality of battery modules, the gap being formed in the first side surface,
• wherein the support part includes a first support portion disposed in rear of the slit and a second support portion disposed in front of the slit, and
• wherein the first support portion and the second support portion extend downward from the first portion.