| 摘要 |
<p>PROBLEM TO BE SOLVED: To facilitate reduction of temperature rise and temperature uniformity in a battery.SOLUTION: A battery module of the present invention includes a plurality of batteries and a full-liquid type cooling plate having a plate surface on which batteries are arranged and a coolant passage through which a coolant flows. The coolant passage includes: a first forward flow passage and a second forward flow passage extending from one end side to the other side along an arrangement direction of the batteries and a first and second return flow ways provided on the one end side along an arrangement direction of the batteries; a first backward flow passage and a second backward flow passage extending toward one end side from the other end side; and a coolant inlet and an outlet provided on one end side, and a cross-section area or a flow rate of the flow passage is set so that a flow velocity of two flow passages of the first forward flow passage and the second forward flow passage and the first backward flow passage and the second backward flow passage return is faster than that of the other two flow passages, and the flow passage in which a flow velocity is high is arranged in a middle of the coolant plate.</p> |
