Battery pack tray and electric vehicle

1 . A battery pack tray, used for installing a battery pack on a vehicle body longitudinal beam, wherein the battery pack tray comprises:

a frame body, at least two placing positions for placing the battery pack arranged at intervals in the horizontal direction and a locking matching structure are formed on the frame body, and at least one pair of adjacent placing positions is provided with the locking matching structure therebetween;

the locking matching structure comprises a horizontally arranged locking shaft and a first connecting plate and a second connecting plate extending along the length direction of the vehicle body longitudinal beam, and both ends of the locking shaft are respectively connected with the first connecting plate and the second connecting plate for cooperating with a locking mechanism on the vehicle body longitudinal beam to realize locking.

2 . The battery pack tray according to claim 1 , wherein the battery pack tray further comprises:

a second electrical connector for electrical connection with a first electrical connector on the vehicle body longitudinal beam, the second electrical connector is arranged on the frame body at a position corresponding to the first electrical connector, and the second connector is electrically connected to the battery pack;

there are at least three placing positions, and at least one placing position is located between the vehicle body longitudinal beams when the battery pack tray is installed on the vehicle body longitudinal beam.

3 . The battery pack tray according to claim 2 , wherein the frame body comprises a plurality of sub-frames arranged in parallel and fixed beams, the plurality of sub-frames are connected by the fixed beams, both of the first connecting plate and the second connecting plate are connected to the fixed beam, and the sub-frame forms the corresponding placing position.

4 . The battery pack tray according to claim 3 , wherein the locking matching structure further comprises a reinforcing plate, the first connecting plate, the reinforcing plate and the second connecting plate are sequentially connected to form a U-shaped structure, and the locking shaft is located in the opening of the U-shaped structure.

5 . The battery pack tray according to claim 4 , wherein a penetrating unlocking guide hole is arranged on the reinforcing plate at a position corresponding to a locking rod of the locking mechanism;

and/or, an upper end of the U-shaped structure is not higher than an upper end face of the sub-frame.

6 . The battery pack tray according to claim 3 , wherein a plurality of the placing positions are arranged along the width direction of the vehicle body longitudinal beam, and a plurality of the sub-frames are arranged in parallel to each other.

7 . The battery pack tray according to claim 3 , wherein the sub-frame comprises a supporting beam and a reinforcing beam connected to each other, and the battery pack is installed on the supporting beam and reinforcing beam;

preferably, there are two supporting beams, and the two supporting beams are arranged at intervals, and a reinforcing beam is arranged between the two supporting beams.

8 . The battery pack tray according to claim 3 , wherein there are two fixing beams, and both ends of the sub-frame, the first connecting plate and the second connecting plate are respectively connected with the two fixing beams.

9 . The battery pack tray according to claim 8 , wherein the battery pack tray further comprises a limiting structure, and the limiting structure comprises a stand column and a limiting rod, wherein the stand column is arranged on the fixed beam at a position corresponding to between of the adjacent placing positions, a first end of the limiting rod is connected with the stand column, and a second end of the limiting rod is connected with the fixing beam and extends to the outside of the sub-frame;

preferably, the connection position of the stand column and the fixing beam is provided with reinforcing ribs.

10 . The battery pack tray according to claim 8 , wherein there are two locking matching structures, and the number of placing positions on the side of the two locking matching structures far from the vehicle body longitudinal beam is equal, and the second electrical connector is located between the two locking matching structures;

preferably, the battery pack tray further comprises a fixing plate, and the second electrical connector is arranged on the fixing plate, and the fixing plate is located between two fixing beams along the longitudinal direction of the vehicle body longitudinal beam.

11 . The battery pack tray according to claim 1 , wherein there are a plurality of locking shafts, and the plurality of locking shafts are horizontally arranged at intervals along the longitudinal direction of the vehicle body longitudinal beam.

12 . An electric vehicle, wherein the electric vehicle comprising a vehicle body longitudinal beam and the battery pack tray according to claim 1 , the vehicle body longitudinal beam is provided with a locking mechanism, and the battery pack tray is detachably connected to the vehicle body longitudinal beam by means of the locking matching structure and the locking mechanism.

13 . The electric vehicle according to claim 12 , further comprising a vehicle body bracket, the vehicle body bracket is arranged on the vehicle body longitudinal beam and the locking mechanism is arranged on the vehicle body bracket;

preferably, the locking mechanism is provided with a through groove for the locking shaft to pass through, and the through groove is located below the vehicle body longitudinal beam or the vehicle body bracket.

14 . The electric vehicle according to claim 13 , wherein there are two locking matching structures of the battery pack tray, and the two locking matching structures are located between the two vehicle body longitudinal beams, and the locking mechanisms are arranged at opposite sides of the vehicle body bracket;

or,

there are two locking matching structures of the battery pack tray, and the two locking matching structures are located outside the two vehicle body longitudinal beams, and the locking mechanisms are arranged at opposite sides of the vehicle body bracket.

15 . The electric vehicle according to claim 12 , wherein there are two vehicle body longitudinal beams, and a beam is arranged between the two vehicle body longitudinal beams, and the beam is located outside the battery pack tray.

16 . The electric vehicle according to claim 12 , wherein there are two vehicle body longitudinal beams, a beam is arranged between the two vehicle body longitudinal beams, and the beam passes through the placing positions between the two vehicle body longitudinal beams.

17 . The electric vehicle according to claim 16 , wherein a battery pack is arranged in the placing position of the battery pack tray, the battery pack in the placing position, through which the beam passes, between the two vehicle body longitudinal beams is provided with an avoidance part for avoiding the beam or is divided into a plurality of battery packs by the beam;

and/or, the top of the battery pack in the placing position, through which the beam passes, between the two vehicle body longitudinal beams is higher than the bottom of the vehicle body longitudinal beams or the vehicle body bracket.