HEAT DISSIPATION STRUCTURE OF BATTERY UNIT

• Main Authors: TAKAHASHI YASUSHI, KONISHI TAKAFUMI, KOJIMA MASANORI
• Format: Patent
• Language: English; Japanese
• Published: 13.01.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a heat dissipation structure of a battery unit, capable of improving, with small size and low cost, the performance of a battery unit by effectively dissipating heat of a battery laminate that uses a flat plate-shaped radiator, even in the case where a cooling fan is not included.SOLUTION: The present invention provides a fan-less battery unit 1 including: a battery laminate 5 in which a plurality of battery cells 2 packed with a laminate and a plurality of radiators 3 brought into surface contact with the battery cells to dissipate heat are laminated alternately; and a housing 7 in which the battery laminate 5 is accommodated. The battery laminate 5 is mounted such that the lamination direction S thereof is tilted with respect to the gravity direction Z. A convection space part 10 serving as a passage of natural convection in the housing is provided between the outer peripheral surface of the battery laminate 5 and the inner wall surface of the housing 7.SELECTED DRAWING: Figure 9 【課題】冷却ファンを有しない場合であっても、平板形状の放熱体を使用したバッテリー積層体を有効に放熱して、小型かつ低コストで電池ユニットの性能を向上できる電池ユニットの放熱構造を提供する。【解決手段】本発明は、ラミネートでパックされたバッテリーセル２と、これに面接触させて放熱する平板形状の放熱体３とを複数積層させたバッテリー積層体５、およびこのバッテリー積層体５を収納した筐体７を備えた、ファンレスの電池ユニット１であって、バッテリー積層体５は、その積層方向Ｓが重力方向Ｚに対して傾倒して載置され、バッテリー積層体５の外周面と筐体７内壁間には、筐体内自然空冷の通路となる対流空間部１０が設けられている。【選択図】図９