BATTERY PACK

• Main Authors: KOMATSU DAIKI, INOUE TAKESHI, MAKINO SHIGEKI, YAMAZOE TAKANORI, YAMAUCHI SHUKO
• Format: Patent
• Language: English; Japanese
• Published: 03.09.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To level the temperature of cells in a battery pack (reduce the temperature difference between a cell in the center of the battery pack and a cell at the end, suppress the temperature rise of the cell in the center, and make the temperature of the cell in the battery pack equal to the temperature of the cell at the end) to extend the life of the battery pack.SOLUTION: A battery pack (100) according to the present invention includes a laminated body in which cells (110) and heat absorbing materials (130, 140) are alternately arranged and laminated, and the volume or material of the heat absorbing material (130) arranged at the center of the laminated body in the stacking direction is different from that of the heat absorbing material (140) arranged at the end of the laminated body in the stacking direction.SELECTED DRAWING: Figure 1 【課題】電池パック内のセルの温度を平準化し（電池パック中央部のセルと端部のセルとの温度差を小さくし、かつ、中央部のセルの温度上昇を抑制し、端部のセルの温度と同等にする）、電池パックの寿命を延ばすことを目的とする。【解決手段】本発明の電池パック（１００）は、セル（１１０）と、吸熱材（１３０，１４０）とが交互に配置されて積層された積層体を備え、積層体の積層方向中央部に配置された吸熱材（１３０）と、積層体の積層方向端部に配置された吸熱材（１４０）との体積または材料が異なることを特徴とする。【選択図】図１