A smart integrated charger device for an electric vehicle, comprising a charger body with constant temperature and constant humidity, wherein the charger body includes an upper layer and a lower layer, the upper layer of the charger body includes an alternating current input module, a direct current output module, a lightning protection device, and a general control monitoring module of the charger, and the lower layer of the charger body includes charging modules, and wherein: the alternating current input module is connected to a power distribution system through a power line and is configured to provide power to the charger, and the alternating current input module is further connected to a power meter module through an alternating current input switch; the charging modules are connected to a module alternating current switch and a direct current bus, the module alternating current switch is connected to an alternating current bus, the alternating current bus is connected to the power meter module, and the direct current bus is connected to an output monitoring module, wherein the output monitoring module is further connected to the general control monitoring module; the direct current output module is connected to the output monitoring module through a direct current output switch; the lightning protection device is connected to the alternating current bus; the charging modules adopt smart power distribution and multiple output coordination to realize a current-sharing output and automatic balancing control; and a thermal insulating layer is provided between the upper layer and the lower layer of the charger body, the charging modules are aligned side-to-side, an air duct is provided between each two charging modules, a plurality of filter screens and fans are provided at a side of the lower layer of the charger body, an exhaust fan and an air outlet are provided at another side of the lower layer of the charger body, filter screens and fans are also provided at a side of the upper layer of the charger body, and an exhaust fan and an air outlet are provided at another side of the upper layer of the charger body. the alternating current input module is connected to a power distribution system through a power line and is configured to provide power to the charger, and the alternating current input module is further connected to a power meter module through an alternating current input switch; the charging modules are connected to a module alternating current switch and a direct current bus, the module alternating current switch is connected to an alternating current bus, the alternating current bus is connected to the power meter module, and the direct current bus is connected to an output monitoring module, wherein the output monitoring module is further connected to the general control monitoring module; the direct current output module is connected to the output monitoring module through a direct current output switch; the lightning protection device is connected to the alternating current bus; the charging modules adopt smart power distribution and multiple output coordination to realize a current-sharing output and automatic balancing control; and a thermal insulating layer is provided between the upper layer and the lower layer of the charger body, the charging modules are aligned side-to-side, an air duct is provided between each two charging modules, a plurality of filter screens and fans are provided at a side of the lower layer of the charger body, an exhaust fan and an air outlet are provided at another side of the lower layer of the charger body, filter screens and fans are also provided at a side of the upper layer of the charger body, and an exhaust fan and an air outlet are provided at another side of the upper layer of the charger body.