A heat pipe is provided for a battery pack. The heat pipe includes a first sheet formed of a first metal and a second sheet formed of a second metal. A plurality of first wick structures are formed on a first surface of the first sheet, and a plurality of first channels are each formed between two of the plurality of first wick structures. A second surface of the second sheet faces the first surface of the first sheet. The heat pipe includes a heat transport media formed within each of the plurality of first channels. Each of the plurality of first wick structures is formed of a first wicking material configured to absorb and transport a fluid through capillary force. The first sheet and the second sheet are joined together at opposite ends such that the heat transport media is enclosed within the first sheet and the second sheet.
