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This application relates to an LN phase inversion detection and correction circuit and an energy storage device, comprising: a first relay and a second relay; a comparison and judgment module, configured to compare a first voltage signal and a second voltage signal and output a first phase difference judgment signal when the first relay is closed; or, to compare the first voltage signal and the second voltage signal and output a second phase difference judgment signal when the second relay is closed; and a driving module, configured to drive the first relay to close and the second relay to open when the first phase difference judgment signal indicates that there is no phase difference; drive the second relay to close and the first relay to open when the first phase difference judgment signal indicates that there is a phase difference; or, drive the second relay to close and the first relay to open when the second phase difference judgment signal indicates that there is no phase difference; and drive the first relay to close and the second relay to open when the second phase difference judgment signal indicates that there is a phase difference. This circuit can realize LN phase inversion detection and correction.