Battery box and liquid cooling plate thereof

The utility model relates to a battery box and a liquid cooling plate thereof. Liquid cooling plate comprising a liquid cooling section, a liquid cooling cavity is formed in the liquid cooling section; a plurality of sealing strips are arranged in the liquid cooling cavity side by side at intervals, so that more than two flow channels are formed in the liquid cooling cavity; the liquid cooling plate further comprises a flow equalizing section; liquid outlet flow equalizing cavities are arranged at the inlet and the outlet of the flow channel in the flow equalizing section; the liquid inlet flow equalizing cavity is connected with a liquid inlet pipe joint; the liquid outlet flow equalizing cavity is connected with a liquid outlet pipe joint; the width of the liquid inlet flow equalizing cavity and the width of the liquid outlet flow equalizing cavity are both larger than the total caliber of the at least two adjacent flow channels. spacing parts are arranged between the liquid inlet flow equalizing cavity and