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Patent

Structure for mounting electricity storage pack on vehicle

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TLDR
In this article, the battery pack is disposed on a rear side of a rear seat, and the battery is fixed to an upper side of the mount by bolts, such that the battery moves when an impact is applied on it.
Abstract
A structure for mounting a battery pack on a vehicle includes a mount for supporting the battery pack. The battery pack is fixed to an upper side of the mount by bolts. The battery pack is disposed on a rear side of a rear seat. The battery pack includes screw holes through which the bolts are inserted. The screw holes have closed shapes. The screw holes are long in a front-rear direction and formed so that the battery pack moves when an impact is applied on it. A fixed state of the battery pack by the bolts is canceled after movement of the battery pack.

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System for absorbing and distributing side impact energy utilizing an integrated battery pack

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References
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Patent

Battery device of vehicle power supply

TL;DR: In this article, an electric power device for a vehicle has a case that is divided into a first case and a second case and the first case is coupled so as to be separable from each other by the shock of a crash.
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TL;DR: In this article, two side members are provided so as to be in side portions of a vehicle, each side member is provided with a kick-up portion curved upward, and a bridge is provided to interconnect the two sides members.
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Body structure for electric vehicle

TL;DR: In this paper, a body structure for an electric vehicle, which has a battery carrier for containing a battery disposed on a vehicle body thereof, is presented, the body structure comprising: a supporting mechanism, which supports the battery carrier; a movement-restricting member, which restricts movement of the battery carriers; and, an energy transfer-control member.