Vehicle impact energy absorption system

1. A vehicle impact energy absorption system, the system comprising:

a pair of front side members;

a battery assembly disposed under a center floor of a vehicle;

a front subframe disposed below the pair of front side members and located in front of the battery assembly, the front subframe being connected to the pair of front side members through a pair of support arms and a pair of support brackets, wherein each support arm of the pair of support arms is provided on the front subframe, and each support bracket of the pair of support brackets is provided on each front side member of the pair of front side members, respectively, and wherein each support arm of the pair of support arms is pivotally connected to each support bracket of the pair of support brackets through a pair of pivot pins, respectively; and

an electric motor mounted on the front subframe.

2. The system according to claim 1 , wherein:

the front subframe includes a pair of longitudinal members, a front crossmember connecting front portions of the pair of longitudinal members, and a rear crossmember connecting rear portions of the pair of longitudinal members;

each support arm of the pair of support arms protrudes from each longitudinal member of the pair of longitudinal members, respectively;

each support bracket of the pair of support brackets protrudes toward each support arm of the pair of support arms from each front side member of the pair of front side members, respectively; and

each pivot pin of the pair of pivot pins extends through each support arm of the pair of support arms and each support bracket of the pair of support brackets, respectively.

3. The system according to claim 2 , wherein each longitudinal member of the pair of longitudinal members includes a notch that induces the longitudinal member to be deformed into a V-like shape in a frontal impact or collision event of the vehicle.

4. The system according to claim 3 , wherein the notch is recessed from a top surface of the longitudinal member toward a bottom of the vehicle.

5. The system according to claim 3 , wherein the notch is located in front of the support arm.

6. The system according to claim 1 , wherein:

each of the support brackets includes a front wall facing a front of the vehicle, a pair of sidewalls extending from both edges of the front wall toward a rear of the vehicle, and a rear opening opposing the front wall; and

each of the pivot pins extends through the pair of sidewalls and the respective support arm.

7. The system according to claim 1 , wherein the pair of support arms and the pair of support brackets are located behind a front mounting portion of the front subframe, wherein the pair of support arms and the pair of support brackets are configured to suppress a rear portion of the front subframe from being deformed in a frontal impact or collision event of the vehicle.

8. A vehicle impact energy absorption system, the system comprising:

a pair of front side members;

a battery assembly disposed under a center floor of a vehicle;

a front subframe disposed below the pair of front side members and located in front of the battery assembly, the front subframe being connected to the pair of front side members through a pair of support arms and a pair of support brackets, wherein each support arm of the pair of support arms is provided on the front subframe, and each support bracket of the pair of support brackets is provided on each front side member of the pair of front side members, respectively; and

an electric motor mounted on the front subframe, wherein a front edge of the electric motor is connected to a front crossmember of the front subframe through a front connection portion.

9. The system according to claim 8 , wherein a rear edge of the electric motor is pivotally connected to a rear crossmember of the front subframe through a rear connection portion.

10. The system according to claim 9 , wherein the pair of support arms are located between the front connection portion and the rear connection portion in a longitudinal direction of the vehicle.

11. The system according to claim 9 , wherein the rear connection portion includes a rear pivot arm protruding from the rear edge of the electric motor toward a rear of the vehicle, a pair of rear pivot lugs protruding upwardly from the rear crossmember of the front subframe, and a rear pivot pin extending through the rear pivot arm and the pair of rear pivot lugs.

12. The system according to claim 11 , wherein the rear pivot arm is separated from the pair of rear pivot lugs in a frontal impact or collision event of the vehicle.

13. The system according to claim 11 , wherein:

each rear pivot lug has a through hole through which the rear pivot pin passes, and a slot extending from the through hole toward the rear of the vehicle; and

a width of the slot is less than a diameter of the through hole.

14. A vehicle comprising:

a center floor;

a battery assembly disposed under the center floor;

a pair of front side members;

a front subframe disposed below the pair of front side members and located in front of the battery assembly, the front subframe being connected to the pair of front side members through a pair of support arms and a pair of support brackets, wherein each support arm of the pair of support arms is provided on the front subframe, and each support bracket of the pair of support brackets is provided on each front side member of the pair of front side members, respectively; and

an electric motor mounted on the front subframe, wherein a front edge of the electric motor is connected to a front crossmember of the front subframe through a front connection portion and a rear edge of the electric motor is pivotally connected to a rear crossmember of the front subframe through a rear connection portion.

15. The vehicle according to claim 14 , wherein each support arm of the pair of support arms is pivotally connected to each support bracket of the pair of support brackets through a pair of pivot pins, respectively.

16. The vehicle according to claim 15 , wherein:

the front subframe includes a pair of longitudinal members, a front crossmember connecting front portions of the pair of longitudinal members, and a rear crossmember connecting rear portions of the pair of longitudinal members;

each support arm of the pair of support arms protrudes from each longitudinal member of the pair of longitudinal members, respectively;

each support bracket of the pair of support brackets protrudes toward each support arm of the pair of support arms from each front side member of the pair of front side members, respectively; and

each pivot pin of the pair of pivot pins extends through each support arm of the pair of support arms and each support bracket of the pair of support brackets, respectively.

17. The vehicle according to claim 16 , wherein each longitudinal member of the pair of longitudinal members includes a notch that induces the longitudinal member to be deformed into a V-like shape in a frontal impact or collision event of the vehicle.

18. The vehicle according to claim 17 , wherein the notch is recessed from a top surface of the longitudinal member toward a bottom of the vehicle.

19. The vehicle according to claim 17 , wherein the notch is located in front of the support arm.