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    BATTERY PACK
    3.
    发明公开
    BATTERY PACK 审中-实审

    公开(公告)号：EP4383297A1

    公开(公告)日：2024-06-12

    申请号：EP22852584.6

    申请日：2022-03-23

    申请人： Vehicle Energy Japan Inc.

    发明人： ODA, Masanari ,  KUBOTA, Osamu ,  KOSAI, Koji ,  AIZAWA, Yasuyuki ,  KAWASAKI, Tatsuhiko ,  TAKAMORI, Yoshiyuki

    IPC分类号： H01G11/10 ,  H01G11/74 ,  H01M50/209 ,  H01M50/503 ,  H01M50/51 ,  H01M50/522 ,  H01M50/526 ,  H01M50/55 ,  H01M50/569

    CPC分类号： Y02E60/10 ,  H01G11/10 ,  H01M50/522 ,  H01M50/51 ,  H01M50/569 ,  H01M50/503 ,  H01M50/526 ,  H01G11/74 ,  H01M50/209 ,  H01M50/55

    摘要： The present invention relates to a battery pack that uses bus bars, and is provided for overcoming a drawback that, in a case where straight-line distance between terminals of batteries disposed adjacently to each other is short, an overlapping area of the bus bars in a planar direction becomes narrow so that a joining strength cannot be increased. In the bus bar that connects a first positive electrode terminal of the first battery and a second negative electrode terminal of the second battery that are disposed adjacently to each other, a first conductive member of the bus bar includes a first joining portion joined to the first positive electrode terminal and a first extending portion extending from the first joining portion, a second conductive member of the bus bar includes a second joining portion joined to the second negative electrode terminal and a second extending portion extending from the second joining portion, the first conductive member and the second conductive member are made of materials that differ from each other, the first conductive member and the second conductive member are connected to each other by a third joining portion, and the third joining portion is formed on an overlapping portion of the first extending portion and the second extending portion with a distance closer to the third joining portion out of a distance between the first joining portion and the third joining portion and a distance between the second joining portion and the third joining portion.

    BATTERY PACK
    5.
    发明公开
    BATTERY PACK 审中-实审

    公开(公告)号：EP4435959A1

    公开(公告)日：2024-09-25

    申请号：EP22892935.2

    申请日：2022-11-15

    申请人： Vehicle Energy Japan Inc.

    发明人： TADA Akinori ,  WATAHIKI Yoshitaka ,  SUZUKI Takayuki

    IPC分类号： H01M50/522 ,  H01M50/209 ,  H01M50/503 ,  H01M50/505 ,  H01M50/526 ,  H01M50/562 ,  H01M50/571

    CPC分类号： Y02E60/10 ,  H01M50/522 ,  H01M50/562 ,  H01M50/571 ,  H01M50/503 ,  H01M50/526 ,  H01M50/505 ,  H01M50/209

    摘要： To provide a battery pack capable of suppressing heat generation due to current flowing through a bus bar and thus suppressing cell deterioration, and improving battery performance by weight reduction. A battery pack 10 includes first to fourth cells 1 to 4 stacked together, each cell including a positive electrode external terminal 12 and a negative electrode external terminal 13 having higher conductivity, and a bus bar 6 that electrically connects the positive electrode external terminal 12 of the second cell 2 and the negative electrode external terminal 13 of the third cell 3, the second and third cells 2 and 3 being disposed side by side next to each other. The bus bar 6 includes a first conductive part 6a connected to the positive electrode external terminal 12 of the second cell 2, a second conductive part 6b connected to the negative electrode external terminal 13 of the third cell 3 and having higher conductivity and higher specific gravity, and a connecting part 6c that connects the first conductive part 6a and the second conductive part 6b. The connecting part 6c is disposed in a first region facing the second cell 2 or in a second region facing the third cell 3.