Battery box and liquid cooling plate thereof

The invention relates to a battery box and a liquid cooling plate thereof. The liquid cooling plate comprises 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 outgoing flow equalizing cavities are arranged at the inlets and the outlets of the flow channels in the flow equalizing section; liquid incomingflow equalizing cavities are connected with liquid incoming pipe joints; the liquid outgoing flow equalizing cavities are connected with liquid outgoing pipe joints; the widths of the liquid incomingflow equalizing cavities and the width of the liquid outgoing flow equalizing cavities are both larger than the total caliber of the at least two adjacent flow channels. Spacing parts are arranged between the liquid incoming fl