US Patent 11801742 Vehicle-mounted battery pack

A vehicle-mounted battery pack includes a battery tray including a floor part, a right frame, and a left frame. The battery tray includes a battery disposition region, a right impact-absorbing region, and a left impact-absorbing region. A battery module is placed in a battery disposition region. The left and right impact-absorbing regions are provided on outer sides of the battery disposition region in the vehicle width direction. The right frame and the left frame are formed to be thinner than the right and left impact-absorbing regions. Further, an easily deformable portion is formed at a lower portion of the right and left impact-absorbing regions.